Got like 6-7 hours in to it now. It's a fun game, but I come from more "standard" FPS games, so Overwatch is a tough pill to swallow. I'm having difficulty accepting auto-kill skills, "aim-assist" weapons (like Hanzo's bow), teleporting players etc etc... And the "netcode" feels sometimes a bit wonky, like dying behind corners and shit (but meh that's in almost every game I guess).
I dunno, I'll probably play it a bit off and on when it releases. But I don't see it becoming my go-to FPS game. Too much crap that I don't really like.