Guys this shit is never going to happen. Holy fuck. Like seriously it's not and now we're arguing about hypothetical scenarios where Blizzard "guts engineering" to somehow make this happen, like what?
This is why you don't huff paint. Okay?
But fuck it 25 pages of this I'm sure none of you are going to consider the voice of reason and let this ridiculous topic go: only if they make it so players can access sub-races of their favorite classes, i.e. mechagnomes. I'm sure they could make it happen in an expansion that involves a time traveling technologically advanced race that nullifies magic or something. We don't exactly know *why* Nozdormu becomes corrupted in the first place, they could elaborate on this and show that he was corrupted by this technologically advanced time traveling faction and keep the old god's involvement behind the scenes until the last tier of content.
That said, the hero class won't be called tinkers of course although it's filling the same niche, they'd probably be something closer to a cyborg who augments their body with technology to improve their abilities and gain new power.