Adding things in a game and then removing them, is a faulty concept especially if those things were liked by literally everyone. Me and a friend of mine actually stopped playing the game when you removed 3 things (no matter the reasons):
1st. The removal of old VGS with the introduction of the new one (which is nice but i don't really care).
I still literally try to say to group VVVB VVVB VVVB which refers to "behind us" or VVGQ which refers to "quiet". This is very frustrating and confusing and i will never get used to it, plus, many characters have voice lines like Infernal Seris who says "aaaah from behind...? that had an impact of fun on the game. I honestly have no intention to bother playing several characters anymore, because they don't seem fun to me anymore without those VGS quotes. It took time for us to get used to all of the combinations and now you just come and change it for WHAT ever reasons. JUST. NO.
2nd. The removal of Top Play. I honestly was competing with my friends even on casual games, on who will get the Top Play this time. Top Play was one of the fun things that this game had, and no matter what reasons, you removed it. I don't really care if it was causing problems to the game, like several bugs etc. FIX it. Its like using an automatic elevator to go to the 5th floor, and suddenly you say "well, sorry but from now on you have to take the stairs because... reasons".
3rd. The removal of Top Role at the end of a match at scoreboard. This was a very nice way to distinguish players at the end of a match, even for fun/competitive reasons. You could see enemy players that topped in their role. Now the only thing you see is your team, which is dull and boring. The feeling i get is like i play against bots all the time.
All of these 3 were the main reasons we quit. I mean, we were frustrated about other things too, such as bad matchmaking, long queues in high ranked etc, but what really bugs me is that i m not having fun anymore. Well, at least i dont have the same fun i used to. I even bought this last battlepass and grinded through the levels mostly against bots cause i find it boring to play against players now that these things were removed. And this brings us to the quitting of the game and moving on to other things.
I don't know if other people could quit for such reasons. Some may say i am overreacting, other may say they quit for even less. All i say is that this was a VERY bad move for the health of the game and i've seen many bad moves since the beta of the game.