pretty nice summary on the Bounty Hunter up on their site. They summarize both roles available to the BH; mid-range DPS & healing, or mid-range DPS and tank.
I am totally planning on playing Powertech. The combination of ranged
DPS and tank has sold me, plus I am intrigued to play a ranged tank
I guess I am thinking of WoW here, but ranged DPS has the easier job
in instances, so I am assuming that SWTOR will be much the same. I would
love to be surprised if this is not the case, however. Still, I found in WoW that ranged DPS for instances plus tanking for raids was my preferred way to play. So for the Sith side, Bounty Hunter is looking like the character for me.
Finally I also like the “do anything for money” way I shall be
playing my Bounty Hunter. Rather than worrying about climbing the Sith
ladder, its credits all the way, baby!