I don't think they should go with another white male captain (if this happens anytime soon).
Two suggestions off the top of my head:
Daniel Dae Kim
Both are good actors with some genre cred, whom I could imagine as strong authority figures.
Trying not to rehash what's been said, I also wouldn't mind:
Courtney B. Vance
All my picks for female captains (Torres, Forbes, Basset) are already mentioned.
Would have loved to see Lance Henriksen or Peter Weller, but they're definitely too old.
Also, not wishing to derail the thread Temis, but in another thread I read you said that there won't be another Trek series because of CBS, I've been out of the loop for a while, what exactly is the deal?