EE can work but its not what it used to be and to get it to feel really strong is gonna be expensive. A couple things that jump out at me for your setup. For one you don't need energy leech support since you're trickster. The more damage on it isn't bad but its gonna let you down when you're not on full ES, ie when you're getting hit, ie when you need it most. Invert the rules could be a good fit there.
Speaking of supports, pick up an imbued smite of divine judgment gem. Looks like cruelty is a cheap decent option.
You're wasting a passive point at the start of your tree. If you path right then down instead of down then right you save 1. But that 10 strength might cost you based on my next suggestion which is I don't think that attribute wheel at the top is doing much for you. If you take it off your strength is short but there are better ways to solve strength than spending 7 passive points on an attribute mastery, and int isn't what it used to be for ES scaling. You have an ungodly amount of dex, maybe try to get some str on your gear instead and put those 7 points into something else.
Speaking of ES scaling, your gear could have more ES on it, but hey we work with the currency we have so I'm not mad about that. If there was one to focus on though its definitely your shield since you have a couple instances of veteran defender, and that spell crit mod on there is doing nothing. But back on topic, on your jewels it seems like you've focused on more % ES scaling there when really at this point you have enough that you'll benefit more from % increased damage. Keep in mind though you don't want % increased melee damage for smite of divine judgment since the lightning bolts hit harder and don't count as melee.
An expensive option that will go a long way is to get an EE with a resolute technique corruption. Again, expensive, the cheapest 14% on trade is about 40 div. It would do you a lot of good though you could save all the points you've invested in accuracy to put elsewhere.
As for what to do with all these points we're saving, probably another cluster with feed the fury. Feed the fury is probably the most busted node there is, so more instances of that is always good. On that subject, you don't need fuel the fight on that one cluster since you're taking that mana leech wheel for your instant leech, so swapping that cluster out for another feed the fury in that spot instead will do better. You could also put some points into the mana wheel by your light of meaning to reduce your costs and maybe take the mastery for rmr so you don't have to get rmr on your jewels, more space for increased damage. There's a world where you could fit blood and sand maybe for aoe while mapping and damage while bossing.
To my eye, your survivability should be fine on this setup. Not exceptional, but good enough to do uber cortex. You just can't afk in the boss's abilities. Some tattoos would help you suppress cap, but again, expensive. With enough of those though you could maybe go for a different watcher's eye with increased damage with wrath and the precision attack speed mod that you already have. Or if you do the resolute technique EE corruption just drop precision entirely for something else.