I've played this game before with you. I'm not wasting time getting links AGAIN simply for you to say "tHeY'rE nOt ThE sAmE".
And you can say it would be a new mechanic all you want but that's speculation at best. And robo-goblin literally changed the unit's creature type. Read what I fucking posted. If it would do completely different shit then it's not the same ability anymore and you should really never use it as an example ever again as a result.
Lore absolutely does not fucking separate tinkers and engineers.