I would love it, Guild Wars had it and was well worth my money. My commando healer to replace Elara. I would use a force healer for my Jedi companions.
Yep. The inspiration for my posting this was GW along with a little bit of others out there. The mercenary thing in the first GW was so nice that all my characters used them for the teams. GW did it to a point though that I didn't need (nor want) to team with anyone really because they were not as good as my alts. Might be the people I teamed with sucked or the alts were just that good. Jury still out.