Nice! Thanks!
One minor point in FAVOR of mental blast... range. This power has longer range than nearly any blaster powers excepting the snipes. This means that at level 6 you can hover blast foes that cannot hit you. It takes a while, but you can do it. Between the lack of knockback and the long range, you can also use this power to single pull. This is very useful at the lower levels and not so bad even in the mid levels.
BTW, I have so far been an entirely defensive defender. I have Mental Blast and took Will Domination very late at 24 because I couldn't even manage grey kill missions solo with mental blast alone. I will probably find a way to take tk blast and lance at some point, though I have no idea whether I'll ever get them slotted. (I need to rework my build soon).