He's always been a hard to use champ.
I feel like he COULD work in the right hands, he has a nice long range poke that freaking hurts, a stun on a short cd (if you are good at getting gold cards at least), and his ult is invaluable, especially with Revive. You can theoretically get back into a fight instantly.
But I haven't seen much of any TF's on SR or Dom outside of high level streams for SR. But I think before he will catch on in Dom, he is going to need a high level player to really show what he can do. He won't be accepted until then since he doesn't have any kind of mobility outside of his ult, and his burst is.... kinda mediocre in comparison to other bursters that are really valued right now.