I think its fair to ask for a replacement of those 2 Shai passive skills as they dont even work after level 40, and are essentially useless for both lifeskill and combat.
My idea is :
Joy of Gathering replaced with
Never Ending Will : Shai's never ending will to make the world a better place after her troubled past at Florin makes her stronger and unwilling to give up.
Evasion rate %

Joy of Alchemy replaced with
Power of the Music Spirits : Aided by the music spirits of Kamasylvia, Shai brightens every bit of darkness she goes with its vitclari. 
Movement Speed +%
Open for suggestions.

Current passive : 

i would rather see those two skills buffed like over 9000% exp for both

I like the idea of replacing/reworking Shai's passives, but I think giving her normal passives like any other class will just trigger all the reroll Andys again, who will then demand another Nerf because "Shai is broken".

Also since Shai is somewhat supposed to be a lifeskilling class with all the "benefits" she has regarding lifeskills PA should emphasize that aspect more instead of buffing her in PvX. Many players who are not mainly lifeskilling have a Shai as their lifeskill character for imperial cooking for example. Ontop of that Shai isn't even that "efficient" while gathering, fast classes are way more efficient.

So my idea would be to make Shai a better entrance to lifeskilling for players who want to try it while also trying to balance out her weakness in Gathering by providing buffs that make it somewhat worth losing the efficiency.

Now to what I would suggest:
Remove Joy of Gathering/Alchemy

Replace with Joy of Work:

- Mastery +50 for all lifeskills

Remove Gathering/Alchemy Wiz

Replace with Hard Working:

- Life EXP +50%

Shai's hidden passive of starting out at Professional in Alchemy and Gathering

Change this to start out at Professional in all lifeskills

Shai was never suppose to be a "life skill" class. This is a perpetual meme and misinterpretation here. A life skill class would make zero sense in the grand scheme of things since a vast majority of life skills are afk activities. How do you make a class to go afk with? Furthermore she only has life skill passives related TWO out of ELEVEN life skills. Yes two, Corsair has one life skill passive (sailing related). Does that make her a life skill class? Do you ever hear anyone saying corsair is a life skill class nope!

Here is the truth:

Lore wise Shai originates from Florin. Florin is home to...follow me now Gathers and Alchemists. Hence why Shai has those passives. In similar trend, all characters after Shai followed the same blueprint. 

Hash is a desert warrior, his passive is he has infinite stamina in the desert.

Corsair is a pirate, her passive is that she has a sailing bonus.

Sage passive is that he can open ancient ruins without a key since lore wise he was the one who created them.

Drakonia passive is related to dragons, she collects dragon fossils to get a buff.

See the pattern there? Anyhow, Shai passives are very bad. They could be done away with and give her something that does support her lore but also is character and combat oriented.

Maybe elixirs and potions have a more intense effect on her or last longer etc. Or something that would be awesome. Elixirs don't go away if Shai dies. 

Thats why there are small words that add to the sentence/statement, for example "somewhat". Also reading 3 sentences of someone's post and then replying overly rude/passive-aggressively is not the way to go.

Anyway lore-based or not it doesn't remove the fact that many players use Shai as a lifeskilling character no matter if she was meant as one or not. My point of just expanding upon her already existing passives and making them more useful still stands, if Florin is a town of gatherers and alchemists or just lifeskillers in general.

And because I don't like how you act:
- Having a more intense effect of potions would just make every non-Shai player cry again and Shai will get another nerf (players are still crying that Shai has a +30AP buff with 100% uptime and a +30AP buff with ~17% uptime)

- Having elixirs last longer is more useless than her current passives because all it does is save you 1-10m/h depending on what you use

- Elixirs don't disappear upon death is even more useless because if you die while grinding get more DP and if you die in a 1v1 what are you even doing trying to DFS as a class that has ~60% reduced damage in PvP - ontop of this already existing with Immortal Elixirs

Well, when Shai was released, 300% Exp actually meant something.  Like all games, power creep is beginning to kill all aspects of the game.  Whenever something gets buffed, someone out there will point out that it creates an imbalance of sorts, and something will need to be nerfed/buffed to compensate.  Unfortunately, poor Shai is a fun target for nerfing.  Perhaps Sahi could get a couple more passives at lvl 60?  Or, they could add Skill Add-ons for lifeskills for Shai?

Anyway, to keep this game and all its awesome, tiny elements pertinent, the devs should always be looking at EVERYTHING and evaluating how they fit in to the ever-changing world.  If something is left alone for two years, power creep will render it pointless.  They should have a crew constantly paying attention to these things so that everything stays relevant and nothing becomes meaningless.

Pretty much all of the class passives after Shai are very niche. What use is Hash passive outside of desert? Who is just running the in the desert anyway right? Nova class passive doesn't work outside of combat, which is arguably the most useless one.  Looking at the other class passives after Shai, I don't think they are suppose to be overpowering. But only there to serve a niche function.

What is your suggestion for the life passive, as its very useless right now? As i said, i'm open for suggestions.

They work, how much exp do you expect for making elixir? 1%?

Even with nice 300-500% exp buff sometimes you need kill 10 mobs for 0,001%.

Every time you perform a life skill, in the upper left corner experience icon "flashes" for a fraction of a second, informing you that you got combat exp.

And next one who wants powerful bonuses for free. This will never happen because players will lynch the PA. 

After such a change PA would have to give all players compensation: free slot for shai lvl 49 free transfer of all life skills from other characters and free all life skills outfits for shai.

I see your point, but those passives are, useless. I mean no one is gonna level up by gathering, at this stage. I'm asking suggestions. I also do think mastery buff is way too much. I think they could replaced by a combat passive and then another life passive more useful than those present. Now, what it could be is a great question. I was thinking of like 2% Gathering Drop Rate, but might be too much. Life EXP doesn't make sense as 2 other passives already do for gathering exp and alchemy.