I am kicking around an idea for a home campaign once the books are finished.
It would start with a mission to explore a new world where they find a Goa'uld laboratory. After fighting some guardian and hacking the door into they lab they discover some genetic research performed by Naraka a Goa'uld researcher formerly in service of Nirṛti. There are several slides with dna samples as well as some preserved symbiote specimens and some gate addresses not on the Abydos cartouche.
Analyzing the research shows she was researching transforming a symbiote into a queen. The Tok'Ra are very interested in this technology. Further analysis reveals that it can only be performed on a larva symbiote. The dna slides contain different stages of human development. It is evident she was also researching Hok'Taur
In going to the different new addresses they discover a modified sarcophagus that instead of healing will rejuvenate, reverse aging.
Despite the risks of using a sarcophagus the Tok'Ra representative decides a single use is worth the risk of having a queen Tok'Ra to propagate the line.
The representative is removed from the host, rejuvenated, and is given the royal serum (like royal jelly for ants) then implanted in a new host. What was not evident from the research was the rejuvenation process is far more corrupting than healing in a sarcophagus.
The Tok'Ra now evil pushes the team to find Naraka's remaining labs. They eventually find Hok'Taur preserved in stasis which the Tok'Ra then inhabits and escapes the team.
He then gathers support to become a small but rising system lord. He also knows of the base and all the current Tok'Ra operation.
The feedback I am interested in is some transition events and possible combat challenges along the way.