Considering that often we aren't JUST one kind of lifskiller OR PVP or PVE player, it can be quite frustrating to juggle our loadouts. ie; I get on my character AFK fishing, with all my fishing gear on. That is Fishing shirt, manos accessories, fishing pets, Fishing artifacts, life tome (Caphras Journal of nature) , Crios fishing chair, taylored fishing outfit, treant spirit stone, fishing specific buffs. 

I then head toward Imperial fishing delivery, and to hand this in, I have to swap to Trading Silver embroydered clothes, Taylored trading outfit, Trade focused artifacts, refresh buffs, take out trading pets, 

Oh and whilst doing that, Kutum spawned so I had to go to it. So I swap to my alt at that boss, fight. Then I come back and like "where was I?" Granted I just woke up, and am ADHD to the max, doesn't help, but that kind of distraction would affect even neurotypical people as well. 

So instead of picking up because I am already stressed again, I just hurredly hand them in, 

Feed workers steamed bird meat, restart them as they are artisan goblins, feed them steamed bird meat (4), feed them grilled bird meat (3), feed them beer (2) 

The time to harvest my Dry Mane grass in my 10 old moon fences. I go to the fences, then swap to SE farmers clothes, Swap to Farmer Taylored outfit, Swap to farmer pets, swap to toolbag to gather around my fences as well, check buffs, swap to farm artifacts, then harvest, then inventory management as I decide what next, to in which I have to set up again. 

I don't want to go into it any more but you get the point or so I hope. Pearl Abyss has done a lot to help us to make this an easier process, which I thank them greatly, but I just would hope for more quality of life improvement and less stress in order to take advantage of things I have spent time and money to advance my respective fields. I know I don't speak for myself only when I try to convey the frustration I feel when I discover I missed 1 or 2 of these items for ONE action. Much less like how that I haven't bothered changing my pets for a couple days because I just am too task saturated. 

Ideally it I envision some kind of master UI where I can set up full loadouts in one click. Farm would include EVERYTHING needed to farm at whatever capacity I have going and the time and or maybe options for alternative builds. Because yes, most times we are focused , like XP until we get to Guru, but some day we will swap, but with cooking we have fast cook and slow cook, Hunting we have XP, Money, Contribution, often different set ups for certain mobs, this going as deep as graphics some times because hunting Verdure bucks you need lower graphics to see corpses. 

Then we have multiple set ups for PVE, whether that be mobs, bosses, (including OFFIN which barely anyone brings matchlocks to anymore so it doesn't die), feild bosses, PVX for arsha areas, PVP which usually has distinctions such as DP/Evasion/DMG, then High money buffs, low money buffs, etc. 

This just being a brief overveiw even, and it might need the incorperation of refinments of existing systems to adapt them to a one click to action ability. For instance 5 presets for pets just aren't enough. I could go into detail about revisions such as ability to name those loadouts too, but I leave it up to the creative genuis of the dev team at Pearl Abyss to be able to offer up creative and effective solutions to ultimtely make playing this wonderful game less frustrating. Ideallly we look at these things and it isn't as simple as profit per hour considering the amount of set up needed as well as time to deal with what you have earned during that time. We came to play, not play inventory management. 

Thanks for considering, 
Chris 

Pet groups have been suggested before. They're probably too much work for PA to dig into the aspect, even more so considering how many other important things (sea content, cut content, constant complaints from the group pvp community, etc) need time and reworks.

As for the rest... I dunno, I doubt it's a sound strategy for PA to drop the Morco Bags (which are a pearl item) for a system overhaul that makes them useless.

There is already item in game that allows gear swaping with one button, it's called some gear bag.

As for the kutum, your issue starts with going with your main there instead of lefting an alt there, same for farming.

OP did state that they swap to an alt for a boss in their hypothetical.  Using alts as 'load-out bags' is impractical anyway.

My take on this is 'why are we swapping?'  If we own the capability, it should be applied to the current activity.  But it's more complex than that, as OP points out.

We should also stop presuming to manage PA's work by attempting to gatekeep (other's) suggestions.

As for OP's last statement about playing vs. inventory management, mostly correct, but some people are attracted to such activities.  However, it would be nice if it were a choice, and setting up the 'one-button' load-outs (and perhaps automated swap conditions) would potentially be an attractive activity as well, and less repetitive too.

Gear swaping have nothing to do with using boss, famring etc alts. If you do them with your main, that instantly invalidates the value of said activity simply due to the amount of extra time you need to put in by going there with ur main.

No, this would be an important part to that, like you wouldn't have the functionality without the bags on both sides.  There being a potnetial downside IF they want to fleece people for money to have those bags on every character they have. 

I use these and I think I made it pretty clear it is WAY more than what these bags offer. The idea is that it makes all of their items work together for quick change. 

This would work in addition, coordinating the options. If anything it might prevent us from buying it over and over, but I don't think that is really what they are after. They are trying to make it easier essentially, this is just a hope holistic way. 

I don't want to speculate on whether it makes sound buisness sense, I know nothing of that or thier true priorities. But this is a suggestion forum, this is what it is for is it not?