Given how significantly most of these people have aged, I wonder if an animated film or TV series would be a better idea if someone decided to pursue this project. I've no interest in seeing Frakes strut around with his huge beer-gut, but I'd be okay with him voicing an animated Riker.
In theory they could do anything
with the help of animation. It could even be set pre-Nemesis and actually incorporate Data in the cast too, because Spiner's concerns about being 'too old' to play an ageless android would be very easy to fix in animation. He would just have to sound