Been looking at this fun build for pvp. Called it the Energizer as a number of talents trigger other things.
http://db.darthhater.com/skill_calc/bounty_hunter/powertech/#::fcf17e5fefe3f4e2fef2e4f2ef5e2f2e
Basically, you brawl then kite your foe letting 3 dots wear them down. Combustion is the cylinder of choice.
strengths: good cc, mobile, dots
weaknesses: low burst (although rail shot will hit hard and often)