Everything you described is basically what the agent is. If you like that style, just play one of those. Games like swtor can't afford to have tons of classes -- with awesome voice acting and thousands of hours of it, they can only have a few storylines and I think they covered the playstyle spectrum pretty well.

I actually do the same, I just made that build quickly to pick up all the talents that affect railshot. And to address those above discussing how TD is a higher dps choice than the aim: there's really no way to tell without a combat log. It's possible TD is the highest dps route, but it's also possible that the aim is a better choice.

I like using 31 pyrotech, but it usually involves dropping the 9% aim bonus. And without that, you're not maximizing railshot.

Neither of those maximize rail shot. If you want to have the biggest rail shot crits, use this build: http://www.torhead.com/skill-calc#301hMhZMcZfhMbdGhMc.1 Higher overall dps as well than either of those builds

It actually does make sense. It's clearly not thermal contact with the environment that vents heat (way too fast for that) so it's got to be some venting system. But heat up electronics a bunch and the resistance of the wires increases, making the system less efficient. Physics'd.

Maybe this is what you're looking for? Item Set Bonuses

All the knife attacks are classified as tech. So that means strength doesn't have an effect, I believe.