You only really want the Bombs in Hunter and Hunter already has Bomb Toss which is so much stronger.
Not really. Any magnetic mech might potentially want Bomb to get attched to it.
I think other classes have better Mech tokens they can connect to and in Paladin the Goblin Bombs are really bad because of Kangor’s Endless Army. It just so happens Goblin Bombs are more worth it in Hunter because the damage is better the more of it you have and the extra Deathrattle synergy is actually relevant. You might want this in Hunter in addition to Bomb Toss but Hunter got so many new options in terms of 2-drops this set between Venomizer, Fireworks Tech and possibly Toxicologist that I don’t think this makes the cut. I will say it’s probably better than Murloc Tidehunter.