Well, the question was specifically what to do with a new, level 50 character. Rerolling doesn't really fit that criteria.
Also, after getting 3 characters to 50, its obvious that the 'storylines' are all identical except for about 2-3 hours of class-specific cutscenes. If you rolled alts as you claim then youd know that too.
Don't worry about me. In another 60 days I won't be focused on TOR whatsoever.