I actually know Martin in real life and worked with him for almost a year and he's almost exactly like his Guilfoyle character. He probably was Bill as a young person lol. The only difference is he's super sweet but still has that dead pan sense of fuck you humor.
The title has two questions and this one only fits one of them.
Wish wasn't cancelled, yes!
Wish they brought it back? No, it was a long time ago, and they made Serenity to close off the story and tie things up. It's likely that bringing it back would do more harm than good.
Man, that show was so likable, but I could never get over the pro-Confederate vibes, even with all the staff denials.
Call me crazy, but if I was going to bring back a series doomed by its association with Joss Whedon I'd give The Nevers another shot. I thought it was fun and then the Whedon thing happened and Covid happened and people seem to just have agreed it wasn't worth it and gone home.
If they did another series they could do it without rebooting, just a different set of characters in the same ‘verse. Maybe meeting the originals at various times.