I enjoyed Elite Force, but it's more actiony than I want my Trek games to be. My favorites have always been the ones that try to put you into an episode—Judgment Rites, ST: 25th Anniversary, A Final Unity, and Resurgence. I think the adventure genre is a much better match with the franchise than strategy or action.
Sadly(for me), that doesn't seem to be the direction they're going with this Voyager game. Hopefully it turns out well, though.