I really don't understand why classes have to wither and rot at the bottom tiers for years. The picture below shows the bottom-tier classes at Hexe. If we're nerfing Meagu by just a flat amount, why can't PA just give these classes a flat buff of +3% or +5%?

Yea i wouldnt 100% trust on Garmoth Numbers, and hopefully PA doesnt do that either

I fixed it for you. 

Shai is actually really strong at Hexe, lol

because its too much hassle.

Probably all about money

They do tweak classes and that's where we get "flavor of the month" classes. A small tweak can result in big changes and garmoth isn't a reliable source of information. Only PA has the actual numbers of what people get as drops etc... There are far too many variables to expect any quality result from public listings such as efficiency in grind rotations, item drop rate, current luck cycle in the server etc... Shai in general is one of the weakest because she constantly has to rebuff every 30-60 seconds (depending on part of rotation).Her buffs during PvE should be at least 10minutes in duration. I think Tamer is the only one worse than Shai in most places. But this is speculative.

I'm Awakening Kuno + Shai tag. I can tell you unless we're talking about completely low end spots like pollies I rather grind on my Shai than on my Kuno. Grinding imps on Shai the mobs die during the first two attacks of one-two-three. On my Kuno I have to use the entirety of my awakening skills to kill a pack. Shai might not have the aoe to hit the entire pack all together but it's still quite a bit faster and around 10% of the button presses. Sure Shai isn't top tier anymore there's lots of classes which perform better now but at least Shai PvE is still acceptable. The recent PvE buffs on awakening Kuno were more of a meme.

Don't really grind spots which require aoes. Imps is the best example I can do. 

Hence why i wished we could have a skill that enables all the buffs for 10-20 minutes, but you cant buff anyone.

You are right, Garmoth is not fully reliable, and FOTM is a thing. However, all the classes in the screenshot have been at the bottom end (or at least lower average) of the PvE spectrum for years in most cases. And its not only those classes being worse itself, but rather the margin with which they are worse. While I cant give you numbers for all classes and just the ones I play, an awa dk at hexe at the AP cap can pull maybe 18-19k with everything optimised (on yellow loot). A maegu / woosa can pull 23k. Thats more than 15% difference, and that is where the issue lies. Far as I know, kuno awa plls like 17k, so thats even worse.

PA has been working on equalising this however in the last few months, and we have seen quite a few buffs to classes at the lower end of the spectrum. It hasnt fully adressed things but if this streak of adjustments continues, I hope to see a time where all classes pull within 10% of trash of each other.

As for shai, sure she got to rebuff, but that doesnt mean she is worse. Her skills and especially the buffs make up for it. A good shai can easily pull 20-21k at hexe, which puts her solidly in the middle ground. Other spots, especially those with lots of pack to pack movement or oneshot mobs, sure she sucks majorly. But in this case, she does not. And she makes up for the former with her stellar performance at group spots, imo

Awaken kuno , PA dont like buffing cause shes "good in 1v1" so they just ignore her (or they buff her then buff other classes around her the same amount or more)also litterally they have near 0 awaken kunos on KR so they have no idea about her pve tbvh as it is very high apm compared to alot of classes rn.

Which matches awaken ninja  so they just go succ variants(lower knowledge needed as less skills needed to be learnt aswell as being  lower apm in general or less cancels being utilized)

This is shown through their Clamity Bosses an other metrics in the past. Pretty much over a certian apm or lack of interest on KR plus some other things, PA tend to neglect the classes or lower their priority  , or they overly focus on the wrong things about the class aka removing identity things an adding damage in place of.

If you look at the low performing classes they are either neglected or just have a better variant somewhere alse which usually is a sign KR dont play them much or they are replaced in what they do best.

From a kuno i talked to from KR PA are also lacking staff so some classes get overlooked as they rush fixes out.