Regarding the wholesaler, they had a choice to make: either remove the quest cycling or change the wholesaler.
The problem with them was that 2 players could swap 4,000 goods back and forth infinite times and get infinite coins and supplies, and then those could be used to buy even more goods.
They tried removing the quests first on Beta a long time ago, and the people revolted, almost killing the server, so they went this way instead.
So yes, some playstyles were hurt by the wholesaler changes, but ultimately it did need to change.
The KP change of
increasing FS rewards by 80-130% actually helps players advance in the long run as wonders are the most efficient buildings in the game.
Once players reach chapters 6+ they very rarely get "stuck" due to KP. Space and the guest race goods are what slow them down, which can be helped by having higher level wonders. Also, in chapters 11+ your progress is largely gated by divine seeds which are directly linked to how many wonder levels you have.
The loss of /who sucks though.