I think Ferghus is going to be awesome, the go-to god for all our great godly weapons, technological inventions and what have you. If we manage to persuade you of course xD
I can already see Automatons, Talos-like beings and who knows what else. I think Ferghus has as much potential as any of the gods, and his chaotic neutral alignment means he can get away with doing whatever he fees like. 

Vowzra: Uh...two sets of Time-warping spears please. Created a hero recently, have to give him a heroic weapon you know. Would make one myself, but really, too busy these days. Just don't know where all the time goes