... or Robert Patrick as the stoic strong leader.
I've seen Robert Patrick in several different productions and he has a talent with accents.
Perhaps he could play a Captain of British descent, who mysteriously possesses a French accent?
Lol, now then what is the equivalent of "Jean-Luc Picard" in old english? "Sir Timothy Wellington", speaking perfect Parisian of course.
In all seriousness I think a British accent captures that stoic, leaderlike quality. French? Condescending, insulting and contentious. German? Technical and domineering. Russian? Depressing and negative. I think the next captain might as well have a Spainish(Spain) accent! Besides the British, one could argue that the Spanish have the most illustrious naval history, both exploratorily and militarily. Who best then to represent humanity on the final frontier than an eloquent, classly Spaniard?