'Unique gameplay experience' is your opinion. For me, it doesn't fit WoW.And nothing prevents Blizzard from taking that concept and making it fit into a MMORPG game since the hammer tank concept provides a potentially unique gameplay experience, and allows Tinkers to stand out from existing classes. Two things Blizzard considers very important in class design.
And he may never, ever have it, so saying 'not yet' is irrelevant.Not yet.
It's not 'bad comparison'. If you're using HotS as canon sources, so all of it is canon. You don't get to cherry-pick what is or what isn't.Those are alternate skins, not the base skins. Also Gazlowe is a Tinker throughout HotS. Bad comparison is bad.