Thanks Oldskool. I need to respec it and change it as it is, given that Swap Ammo is level dependent as well. The person that helped me with this plays a Staff Tanker and their stance power doesn't get turned off when Exemping down, so they thought it would stay.
HoB, provides 10% Defense for 10 seconds. I was going for the defense caps, but I'm awful at making builds and had help with this one to begin with.
The Surveillance was for -Res, to boost DP's damage, since from what I've read it's lower than other blaster sets because of the lack of build-up... which is also why I went for 3 build-ups in the build, so I could have SOME uptime with them, I'll look into other power choices I suppose. The Regen bonuses weren't a consideration, they're just there from other slotting.
Is Surveillance and the -Res I was going for to boost DP's damage useless? If so, I can get Scorpion Shield, as the +Def for it is pretty high, and most defense blaster builds use it for good reason I suppose.