Well, foo. You even said 'Set' in your post, but he's not usually 'portrayed in a heroic light,' even if he used to stand on the sun-barque, spear in hand, defending the sun against the daily attacks by Apep.
Ah well, I'm also a big fan of
Ptah, 'Opener of the Ways,' an Egyptian god who seems like the sort of god who would, in a post-Stargate universe, totally be the god of stargates.
Generally, I'm more of a fan of less-nice gods. Set, Sobek, Camazotz, Chernabog, Kali. That and archer gods (Apollo, Artemis, Skadi, Neith, Rudra, etc.)