Boring.
Tired.
Re-tread.
"Popular" (yes, in the most negative, commercial sense)
Risky (again, in the worst possible way)
And some more which probably wouldn't make it past the censor.
I don't want to heap abuse on Raimi - oh wait, actually I do. Spider man 3 clearly showed he wasn't able to handle studio pressure and if the Trek reboot was as critically slagged and inferior as S3 was, then i'm not sure how the franchise would have survived.
Everyone knows the best story is the one with a clear beginning, middle, and end, that's been planned out in advance. Not one that's made up as it goes (read: some movie scripts) and not one where you go for the second and third pressing, just to squeeze a little bit more from characters who have nothing more to say. Firefly died before its time. Serenity rewarded the faithful with a finishing flourish. I'd love for more adventures with the crew, but only if there was a story begging to be told, not because a callow studio exec with more dollar signs than grey matter in their head decided it would be a good money maker.
I could be nitpicky, but when there were SO many good moments, and where the whole is greater than the sum of all those good moments, I think I can overlook the minor quibbles.
And if anyone's keeping count, I count myself a trekkie from TOS, mainly TNG and DS9, and fading away at Voyager (and Insurrection) onwards.
The video game adaptation has always been plagued by low returns, either critically or commercially, and right now a solid fan base still isnt a good enough guarantee for investment. I'm betting we'll see a lot more 'reboots' before we see any chances taken on non-franchise IP.