This is an MMO. Different priorities are needed.
There's a lot going on in SWTOR that wasn't in the original KOTOR.
Or could I spec Revan to be a healer?
They cannot be the same game for obvious reasons.
Making a droid customizable to the different types of specializations makes sense in this case.
Making an Assasin droid customizable... sorry i would not like that very much... that would not be HK-51 anymore...
And by the way, Revan got healing Force... so yeah... you could, their names where Cure, and Heal, if i remember correctly...