Thanks!You crit hit:dmg ratio is outside what I'd expect, it's usually 1:10 and you're 1:5 and with pinpoint it will likely be worse. I've read (totally no math proof here) that the goal target is 1:10 and running either side of this is OK but not "optimal". You can fix a lot of it with paragon usually. Running glass cannon won't really work too well with your goal of survival but that might be because you were doing norm runs or something. You have low +skill and +arcane which is fine but will stop you from killing stuff fast. You could run Dynamo instead of glass cannon thinking about it, might be better kill times. Your boots are running the wrong +skill.
I know about the boots, but it's expensive to switch and has a low chance to hit AT, so when I have the bits spare I re-roll. Disintegrate is my 2nd fave skill so when that came up I thought it was better than nothing

I find I have no real problem killing stuff fast, it's almost purely a survivability issue - the sort where any swoop/leap attackers will have me dead almost immediately.