I totally agree about wanting to see Stargate after dropping the secrecy.
I’m not sure it’d work for a Sliders premise unless it was still really hard for most people to do. Otherwise it’d either be really dark or really unrealistic. For every story where some guy who lost his wife is looking for another version of her, five Nazi dimensions would try to invade, three slavery dimensions would kidnap people, and four plague dimensions would start infecting healthy ones.
You’d basically be producing Counterpoint increased to the Nth power.
Imagine dealing with COVID variants from a thousand different universes.
You might be able to make an interesting show where it’s all really tightly controlled. Like every dimension has their own vaccine regimen, there’s agencies pairing up people who lost each other from other dimensions, lovers, parents and children, etc. Hitler dimensions are blocked off. People scalp tickets to dimensions where the performer is dead. Sports contests to determine which version of the same athlete is the best. Debates over whether an artist’s career was better with or without their near death experience. People overstaying their visas to get better jobs.
That’d be more of a comedy though.