What I use if I need a little 'oomph' as a bodyguard is open up with fusion missle then death from above then, if there is a group of weak mobs sweeping blasters, and if not, I usually build up supercharged gas( if it wasn't ready to use already) use it and go powershot happy. Supercharged gas reduces the cost of powershot to managable amount so you can really deliver some hurting with it. I personally moved unload and flamethrower skill to the sidebar as they rarely see any use. Especially unload with it's bugged to hell animation. Quickshots to 30 supercharge->gas->powershots on single target works better for me than unload, but it may be a personal preference. Things that imho, absolutely have to stay on hand, are all your heals, supercharged gas, vent heat, shield, determination, chaff flare, heat sensor override, your CC skills, powershot, death from above and fusion missle. Explosive dart is decent too, if you don't forget to use it when mobs are nicely clustered. Cylinders, buffs, food, grenades, stims and relics on sidebars atm. Debating if I want to just remove non- combat support cylinders to free up some more space for different medpack, food and stims :/. Running out of space as it is.