Originally Posted by
Kalontas
Wait, the tinker fans and the bard fans are fighting? lol
Both classes are equally (un)likely. That is, I'd love to see both, and I do not expect either.
"But we have engineers." We also have blacksmiths, and no one in their right mind would claim we can't have warriors because we already have characters who can make weapons. Engineers make gadgets, tinkers make their whole playstyle around it. Mech suits, or mechanical arms, or turrets. You can easily build several classes around the theme of technology, without infringing on engineering territory at all. Besides the very reductive "uuh, tech?"
Bards are a common fantasy staple with very faint Warcraft precedent, much like monks before MoP. Yes, there were brewmasters, but until MoP popped up and made up the whole lore about chi and the fighting style that fit D&D monks more than the shamanic drunk brewmasters from prior lore, there were no monks. I'd have sooner expected runemasters, which were originally supposed to be the Warcraft monk.
And as for bards themselves - we already have characters who use music and magic (and magic music) to give you buffs and other effects. It really isn't hard to come up with something and make it fit into the lore without retconning anything. And with the current writing team's motto apparently being "there's no lore mistakes, we'll just pretend the mistake was always the lore"... it can definitely happen.