Re: Garrett Wang,unfortunately,isn't cut-out to be a leading
Garret, like Chakotay's Beltran made the age-old mistake of speaking their minds in their first major role in Hollywood. Now I don't think either one said anything that wasn't warranted but I do think as soon as they started expressing their feelings of script neglect, missed opportunities (directing), etc. other actors (even beyond Star Trek) distanced themselves for fear of guilt by association.
I don't think Wang being one of hundreds of asian actors has anything to do with his non-success post Voyager - I could say the same thing about caucasian actors who are all basically cookie cutter models of one another (CW? WB? UPN? FOX? Most actors are interchangeable). I think that with a show like Voyager your acting will never be taken too seriously because drama people will be like (Oh, you do Sci-Fi) even if you have a great resume and experience with Shakespeare, plays, serious-non-Trek roles, etc.
Robert Duncan McNeill, Jonathan Frakes, Roxanne Dawson and a few other Trek people have had good success with directing and I think that's why Garrett wanted to direct an episode so badly. If he would have had that chance, regardless of whether or not his acting sucked, he could make a career as a director on potentially big name shows for the rest of his life and leave the "Trek" image behind.
**BUT** Berman didn't like the guy and made it clear (wow, Kim sure had a MAJOR role on Voyager, huh?) and probably never wanted him to begin with but was forced to bring an asian guy into the cast. I think he did the same thing with Anthony Montgomery in Enterprise...just add a token but don't let them speak.
It'd be great to see Garrett on a TV show again, even if it is a sci-fi themed one. It's not exactly like he had a great canvas to show his acting chops anyways, so its unfair to say that he's a so-so actor from his brief and plot-controlled appearances here and there.
Given the situation, I doubt ANY actor would do any better in that role regardless of race, age, sex, etc.