I played through the RoS back at its launch, and enjoyed it very much. Somehow I guess I got distracted by other releases, but now with the DIV revealed I’m itching for some demon slaying.
Is it worth it? Is the community alive only on forums to complain about the game? Are there any meaningful content patches/DLCs ahead?
Edit: I’m also considering going with DII instead. Would I be better off that way?
A lot of things have changed since early ROS so it’s definitely worth coming back. Sets and other stuff have been buffed to the extreme. Lots of new stuff in the game plus Greater rifts up to 150 and difficulty up to T16. No DLCs coming up but changes every season and patch.
D2!!! Christ almighty 
I play on and off but sadly endgame stuff is always the same so I get bored after few days of grinding. Worth mentioning that D4 is not coming out in 2-3 years the least so you have lots of time.lol