Stargate

Or worse, this happens early even though it turns out decent, opening up new or forgotten ideas, and has fan support.

The problem with Stargate is that it is more limited in how it can explore new parts and times of the universe (like Star Trek has) because of its very nature. Both spinoffs tried to do this, yet got pulled right back to being connected to the original - Atlantis being better at it, those damn stones in Universe is where I started to lose interest, I wanted them to be lost.