I don't event want the old crew. Just give us something cool. The only good thing that came out of SG Universe was the opening episode. It was awesome.
1. The plot is pretty thin and always involves a twist. That the twist happens is predictable, and so the contents of the twist become more and more ridiculous to try to reclaim unpredictability.
2. Every episode is a cliff hanger in service of the twist from #1.
3. Unnecessary lewdness means you can't enjoy it with your kids.
4. It probably won't contain the things that made you enjoy the original. What even is fan service if a large number of the fans hate it?
This creates a problem for future development - existing canon severely constraints the writers. Between writers complaining and executives looking to maximize the size of potential target audience, what usually happens is thus a reboot: the preexisting cannon gets dropped, but is often referenced to score cheap points with fans of the old show.
For reference, just look at what happened with Star Trek past its gold era (TNG-ENT).
The setup for SG1 was pure scifi gold, delivering all the frills fans could want:
• 'relatable 20thC/21stC person' space adventures-in-wonderland
• planets-of-the-week plus long arcs of discovery & tech-advancement
• galactic space opera & epic space wars that only sometimes risk Earth itself
• worldly intrigue referencing current politics/culture: evil Senators! human & alien conspiracies! Wormhole X-Treme!
But, eventually accumulated 'canon debt' & the frift of decades of real history makes new consistent stories that are equally relatable to the 2020s nearly impossible. Our heroes got pretty overpowered at times late in SG1 and SGA.
So, clean reboot! It worked great for BSG. Treat the whole past as a mythology to mine & remix, with winking fanservice rather than strained consistency & retcons. Give us some more Aschen & Tollan, Hebridans & Serrakin. Put some more vaguely-interesting unfolding pseudoscience behind the magic woo that dominated later storylines. Add some new mysteries to the gates, the gate network, & the gate-builders.
What's now possible with streaming prestige-series money, improved digital effects, & a smart full-universe paced master plan could be incredible.