I'm just thinking out loud here, but that's because I've been out of the fanfic game for awhile. Perhaps The Seer could end on this note, because I am pretty sure in The Seer there was at least one or two instances where he admitted he could not see everything:
Working Title: Sliders Reborn
As Rembrandt is sliding in the vortex, the timer malfunctions. Rembrandt is somehow pulled back into the same universe but in a different location (somewhere around 5 miles away). Turns out he ends up landing in the home of someone who has already solved everything - the Kromagg virus issue, all that. Rembrandt is cured. The scientist responsible for solving all of it? Professor Maximillian P. Arturo.
Shortly thereafter, they find the home of a rather technically advanced whiz kid who is...Quinn Mallory as always. He is an advanced physics student and electronics engineer, and kept hiding on this world after the Sliders adventures were discovered. So he has kept to himself, and him and Arturo have kept a very low profile. Such a low profile, in fact, that he developed a very large living enclosure bunker that would hide them from The Seer, for however long it took.
Throughout sliding, the new Quinn somehow ran into Dr. Geiger. They became friends, until Quinn figured out what his real intentions was. He figured out a way to hide from Dr. Geiger, and ended up making a home on Seer world.
Spending time with Dr. Geiger, Quinn figured out Dr. Geiger's machinery. It turns out that Quinn has solved all of the issues with Dr. Geiger's "recombinator." He is able to reconstitute Quinn Prime, and separate both Mallory and Quinn back to their usual selves. He is also able to unstuck Colin. Colin magically slides back as himself.
The next scientist on our list: one Wade Welles. She has become a biologist and very experienced one at that. She is able to make sure that Rembrandt has no trace of the virus, and make it so that Rembrandt is cured, unable to take the virus to the next world. This is the second step in Rembrandt's being cured that needs to happen. Turns out that all 3 Sliders were able to come up with a viable solution to their problems together.
With that, with a brief cameo of around 1 minute, Mallory, Diana, and Maggie all decide to stay on Seer world, letting the original Sliders depart and leave that world, continuing their quest to find home. Colin joins the original Sliders on their quest for home for a couple of episodes.
It's goodbye to not only Seer world, but the old Sliders as well. Now to say hello to the latest, brand-new Sliders who are all in Torme's universe now, and the original cast.
Haha. I had to...