most of it was well known before release, like the 6 week patch schedule, limited amount of zones that won't cover everything up to 60/90, resin system and how the game changes after you cleared the zones etc. and it's not like it's mihoyo's first game - if anyone wants some hints, he just needs to look at HI3 or other gatchas. that's why I have zero empathy for tards that can't read shit like basic banner details and then create thread after thread "the game is dead if they don't do X !!111 - written by a free player". my favorite is them not even understanding why resin, or any other form of timegate you can pay around is even in the game. they will argue to death denying any change in that regard will inevitably lead to shit in other places, they honestly believe when resin is gone it will magically make the other zones appear and give everyone a c6 5 star...
for example other games keep the system, just give you refreshes out the ass and other ways to circumvent it, problem with the limited amount of content in the game means people boost hard to 60/90 (same way they already nolifed to AR35 in less than a week) and complain again, so it really wouldn't change anything.
usually you have some other event that has you grind shit and keeps you distracted, and that's where they dropped the ball not having 1-2 running the whole time. it's cheap, and easy to do. as for the event requiring resin, I think mihoyo fucked themselves with that one - maybe their grand idea was when people see all those ventis and dilucs they gonna dump more money into it - but by making it multiplayer the last thing you want is a "one and done" thing, you need people constantly be willing to participate, and there's only so much you can do with what's already in the game (and how much you*re willing to give away as a company). so resin it is.
not to defend the current system, as
@Gypsymagic said tuning is definitely needed, but not the extend people are whining about right now. from what I heard FGO did not even have a pity system for the longest time and GBF pulled enough shit to get the japanese government involved, so I wouldn't really call it "worst system ever" (yet).
tbh it reminds me of all the f2p drama back then when MMOs switched from subs because they were not sustainable and basically boiled down to "wtf do you mean I gotta pay now?!", completely oblivious that different business models actually do work differently, drowning out all the valid criticisms (and leading to companies going full retard trying to grease the squeakiest wheels while still raking in the dosh).
I assume because resin directly translates to exp (and gold), if they remove it expect it to not give any exp/gold anymore either. but we gotta have to wait and see how the new conserved resin is implemented, I expect nothing so I can only be surprised positively.
eh, don't forget you want to max them at some point to get their full potential, and good "luck" pulling the same 5* six times in any sane timeframe/spending amount. that's why I basically settled for 4* to be done with it, at least at some point I can reasonably "finish" them without giving MHY my whole paycheck each month.