I'm taking a little different approach. I'm putting points in Sharpshooter (crit), Inventions (cond), and Explosives (power). I'm really liking this class. So far, I able to kite stuff easily if given the space. In most cases I have plenty of space. With the help of turrets I can burn mobs down pretty fast.
Have you guys been using the Big Ol' Bomb? This and a little glue works wonders. -- Those who hammer their guns into plows will plow for those who do not. ~ Thomas Jefferson
Hell yeah, sounds like you're going straight up dps. I wanted to be more tanky but didn't want to invest in toughness. I love the versatility of this class. There's even a mele kit (the tool belt) that might make for a unique build.
For utilities I go with the starter heal, flamethrower, flame turret, the elixer that turns all conditions into random boons, and use the summon golem as my holy shit button.
It's a lot of fun to go running through a big pile of mobs going head to head with other players and drop one of those in the middle of it all. -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin