Looks like States has given up on this thread, what with the Regen debates filling it, but jsut in case.
Any chance you'll be making some tweaks to the Energy Manipulation set? I've got a lvl 28 Eng/Eng Blaster, and as much as I like Build-up, the bulk of the set is melee, and as a blaster I should never be in melee range, if I am, I'm pretty much toast.
Ice manipulation has the ice patch, and a few other tricks to slow/hold enemis. Fire has a few nice litte crowd control tricks. As does Electricity, and Devices is simply devastating in general. Plus most of them have some nice AOE attacks as well.
Energy has mostly melee for the first half. You get Build-up and Conserve Energy which as a blaster are God sends, but the really cool powers don't open till very late in the game. And honestly I started to focus on powerpools for many of my slots since I have no need for five melee powers as a blaster. I mean hell, the ultimate power in Engergy manipulation is a melee attack. Which though I hear it does great dmg, If I'm playing a blaster right I'll never use it.
Perhaps replace one or two of those melee attacks with some kind of AOE, perhaps make stun a small energy blast that does low dmg but has a high chance to stun or disorient enemies within a short range around the hero. Like a EMP pulse.