I've only tested electrical control on a dominator, and so far I like the changes a lot, but I've noticed that the pseudo pet that is spawned by Tesla Coil does not appear to scale with incarnate levels. Testing in Dark Astoria, on a level 53 incarnate character, against level 50-51 mobs it practically holds the whole group to death, but if I use it on a pack of 54s, it basically does nothing but piss them off. There is a brief half second hold, and then they shrug it off and attack me. Static field seems to work okay.
I honestly thought the power was completely broken, but didn't see anyone else having the same experience, so that's when I thought to test the level scaling.
I just checked with gravity distortion field, and it is exhibiting the same behavior.