I liked the way they ended it, wasn't a fan of the season as a whole, though. The series had a ton of potential but most seasons, outside of Season 2, were a big let down. Good series but had the chance to be great.
I honestly quit watching with anything more than a passing interest after Nucky killed Jimmy at the end of season 2. I'll have to stream it on HBO GO. Great actors though.
I think the writers were feeling the same way and wanted to bring it back to Nucky. Too bad. Michael Pitts was great as Jimmy. Always felt there was a hole in the show after he left. Show seemed to lose any humanity.