Arcadio

I hard disagree with needing softcapped ranged on top of S/L. Building for that would gimp your build quite alot. On my Ice/Psi just S/L is enough for me to solo basically any +4/x8 content I walk into, especially with drain psyche being basically perma instant regeneration, and shock wave disorienting a quarter of the mob each time. With Elec you have much more active mitigation than my Ice so I think you'll be great on survivability. As far as single target, dominators have the same melee damage modifier as blasters so I try to prioritize the melee attacks. My chain is the ST hold, probe, thrust, and the snipe. I very highly recommend replacing mind probe with the snipe, it is really very powerful for taking down bosses. I also like to slot the ATO in your ST hold for the +Dam proc since you should be using it frequently. When the proc gets stacked it's really a significant damage bonus. Otherwise, I like the build. Makes me want to try an elec dom :^)

For regen, your passive regen isn't that important. Recharge is the stat you want to focus on since it lets you use your active regen as much as possible. As far as defense, it's pretty difficult to get to the soft cap without seriously hurting your other areas. One thing you can do to add a little more defense is split the stalker's guile into two powers with 3 each, since that'll give you a total of 10% S/L defense. Also, shadow meld is a great mitigation power but it can never be perma. The best you can ever hope for as far as recharge reduction is dividing the base by 4.

Is there a reason the to-hit damage scaling can't just go all the way back to the original damage scale? Speaking as a dominator enthusiast, it is notably difficult to get that high to-hit permanently. And for builds which can make that happen, to be rewarded with a 2.76 damage scale power instead of a 3.56, it feels like a slap in the face. Dominators need something to build towards besides perma-dom which, since it no longer adds damage, just doesn't interact with most of the secondaries.