Why goblins? Because goblins.
Krenko EDH/Commander has always been fun. May as well bring it into a 60 card format because I haven’t yet. Krenko alongside multiple copies of Warchief, Ringleader, Piledriver, really everyone, seems fun.
Goblin Warchief and Chieftain give a lot of haste. Makes it easy to activate Krenko the turn you play him.
And on top of everything else, one of timeless reasons to play goblins: Goblin Grenade. Just chuck a goblin into anything that’s going to kill you.