Personally, I'd prefer to roll back to the previous chat, if that's not what everyone else prefers, then that's also fine.

I do find achat incredibly irritating, but I'm not a majority, heck, I might just be a loud minority. Between the lag, the missing chat messages, and the constant refreshing...

And yeah, it doesn't look like there are many chat rooms. Beyond Discord, which I'm going to assume was a no. (although it does have a web widget). Most of them are customer service clients, and the only other one like achat is cometchat which is virtually identical, but more expensive.

Whatever course of action you take doc, I'll be fine with it.