Stargate
Stargate '94 has amazing costumes, sets, music, and lore, but weak writing and characterization. Stargate SG-1 has good characterization and writing, but it feels like a Trek knockoff, complete with generic English-speaking extraterrestrial civilizations and technobabble. I’d essentially like to craft a Stargate reboot which contains all the best elements of SG '94, SG-1, SGU, and the Bill McCay novels, and none of their worst.
I’d probably limit the humans seeded across the galaxy to north African stock rather than go gung-ho with Greeks, Chinese, Native Americans. etc. Also, no frickin’ Ancients/Ori/Ascension. That stuff wrecked Stargate for me.