Rough launch? It had a rough fucking year
Many of the basic features that shouldve been in at launch (like forge, level selection, CO-OP) we had to wait for until season 3 (one full year after release)
And thats not even getting in the game design issues like desync or lack of collision or battlepass implementation (specifically how it feels like 70% of each battle pass is just swaps and xp boosts)
I wont say it hasnt improved at all, but honestly it went from straight-up shit to mediocre, not exactly a big jump.