You've skipped a number of key powers in Gravity, an already control-light control set, in favor of some pretty useless powers.
Propel is a very slow attack and you have plenty of damage in your secondary.
You've skipped both your mass hold AND wormhole, your AoE stun that despite its problems is a pretty cool power. It's not great but it's the only AoE foe teleport in the game and you can't really afford to skip major control powers.
You've skipped crushing field which is unusual because it helps a lot with gravity's control of position (in conjunction with wormhole). It can also take a whopping four damage procs if you desire which makes it, in my experience, a very useful way to dish out a lot of AoE damage very quickly (as it has a huge area and target cap and recharges quicklike).
You appear to be going for permadom and yet have taken enhancements that give you knockback protection, even though Domination gives you ample protection in that regard. In addition I don't think you actually are perma.
You took the self intangible power from stealth which is odd. You could have taken Vengeance instead which is more useful and can hold another LotG+Rech.
You've invested a lot of slots in improving the defensive ability of steath which is... dubious? In combat it'll go from 2.15% def to 3.35 which doesnt seem like much for four slots.
You've slotted Psychic Shockwave which as far i know is a good damage power with VR stun enhancements...
You've 4-slotted Psionic dart, the weakest of your attacks, with purples, and in such a way that you miss out on the 10% recharge bonus (that you'd get if you 5-slotted it).
On the subject of purples, you've purpled out Crush, a power which I find of dubious usefulness.
You've slotted stamina with efficacy adapter instead of with performance shifter which is awesome for the +end proc (I like to 4 slot it with EndMod, EndMod/Rech, EndMod/EndRdx, and the +End Proc).
You've taken Acrobatics which is pretty useless if you're a permadom.
You've slotted Singularity with purples instead of with Expedient Reinforcement which gets you a very nice damage (less than 4% tho) and recharge bonus.
You haven't taken Psychic Scream which as I understand it is a pretty solid power.
Edit: Finally you've taken both super speed and super jumping in order to maximize your knockback protection...
tl;dr: i have absolutely no idea what you're trying to do at all. You seem all over the place with your goals (are you going for softcapped defense? permadom?). You are severely lacking in the control department even for the already control-sparse gravity set. You've made some very unusual slotting choices that don't seem to make the best use of your slots, your powers, or your inf that you'll need to buy the many purples you've used.
Okay... this should be a lot cheaper than that first build you posted, has a +20.5% global damage bonus, and ~32% S/L defense, permahasten (119.1) and easily permadom (71.7 with hasten up, which it will be).
Also it has useful powers and fewer useless powers.
I've never used the /ice epic power pool so I'm guessing what works for it.
Code:
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This is single target build maybe i'll use pvp and some mish, why i choose them, why i slotted stun set.
\_o_/ whatever bro you asked for advice and I gave it
Even if this is a "single target" build (in which case you don't really need any powers other than your ST hold and/or Singularity) it doesn't change the fact that you've come up with a build that doesn't really do anything except spend a lot of money...
Thanks for help 
Any advice?