Thinking about playing again, questions

I enjoyed playing Monster Strike a few years ago (2020?ish). To be honest i bought an account, had a ton of resources and orbs although i think i spent most/all. Had a lot of decent units i think. Basically haven't played since, i think there was a Demon Slayer collab being the last thing i remember. I have some questions

1. Worth it to come back on the account or is power creep enough that it would be better to reroll on a new account?
2. Are time limited events and other character stages still a thing? Needing to play in a few specific ~3 hour timeframes or get fucked was one of the worst things about the game to me.
3. Are stages still very "have the right unit for the gimmick or its almost impossible"?
4. To go along with that, are people still kicking you/leaving lobby if you don't have the meta and/or max luck unit?
5. To add onto that, i heard that gamewith isn't needed anymore? Is it just play with anyone anywhere now?