That's true, but we mustn't forget that
You have some good ideas there, but I'm really against Ashton Kutcher as Riker. I really don't see that one working.
I think it's harder to come up with ideas for a possible cast of a TNG or DS9 movie, as the actors really made the role theirs, saying that, Quinto pulled off Spock really well, not to mention Urban as Bones.
I haven't really got any ideas for actors, but for Star Trek: Nemesis, they did have to cast Tom Hardy to play a younger Picard. At the time, Adrien Brody was also thrown about as a possible younger Picard.
Paramount have already green-lit the sequel, (actually it was given an unofficial thumbs up before the first one was released!). I highly doubt that they'd do a series, simply because of the cost and the actors. Now that the actors (many of whom, Star Trek is their first big-budget movie) have been given a chance to make a film, I don't think that they'll be very pleased with making a series for TV.
Yeah, I also agree that it's unlikely that they'd 'reboot' all of the ST series. If they choose to redo DS9, then they bloody well better get Ron Moore back at the helm!