taunt is fine, but you still need another front liner or you're team comp suffers.
Like you can't really pick varian inplace of muradin, johana, or etc.... when I feel like those three are interchangeable in many cases.
And maybe blizz is correct in not making more "one size fits all" heroes for specific roles, in the long run they're probably doing the exact right thing.
But for right now, there's so many more assassins and specs that it seems like it's very common to end up in situations where you need a very small subset of heroes to fill out the team.
I actually feel like they were getting away from that with the run of a medivh, Ariel, zarya, varian and ragnaros..... like it would be really interesting if zuljin could cast his heal on someone else....
I don't really know what I'm even going on about anymore, but I guess that's a king winded way of saying that I don't think the game needs a stealth assassins right now..... unless they have some cool team utility maybe.