I don't know why you guys like hybrid specs so much. Your better off specializing in a tree.
Anyway, here is my PyroTech build I am going to do. I see people going for the extra aim which is nice for a flat damage boost but from my experience crit is better - especially with Firebug talent.
http://www.torhead.com/skill-calc#301bMZMsZfhMrzGGMs.1
You could go 3/3 in intimidation and 1/2 in Rail loaders as alternative. it might be better to do that since it boosts more of your attacks. Enjoy