I think i'll probably play poison assassin. I've played summoner before, it's fun and easy. My favorite playstyle in an ARPG was the jade harvester witch doctor in D3. ED/contagion is similar but it gets boring (outside of how it cleared legion). I'm hoping assassin does it better (and better single target). I've never played assassin subclass and I generally play more witch subclasses anyways, so it's a welcome change.