I read an article that said that Michael Dorn is in the works of trying to get a spin-off for Worf's character. I personally would LOVE to see that. I loved seeing him as the stoic Klingon.
Yes, there have been several posts about this. In a nutshell, it doesn't have a snowball's chance in hell of happening.
Yeah, poster above me beat me to it, but I remember Takei wandering around the convention circuit in the early-mid 90s trying to get an Excelsior series made and that didn't really fly.
I'd like to see a new series, but I want it to be a really compelling series and not just a generic Trek focus groupped to "perfection". I want more interesting characters than we were seeing out of VOY and ENT and I want Trek to tackle tough social issues again.