Lets see here.... You're missing a lot of crit damage by not taking Mind's Eye... And if you're playing UVHM, I'd botch everything but Accelerate in the Motion tree, and instead take Harmony all the way down to Scorn, so you don't have to worry about having a weapon in your grenade, or any of your weapon slots.
Also, past PT1, Corrosive Cloud doesn't do much damage. I'd max out flicker instead. If you're worried about your Phaselock cooldown, I'd recommend replacing whatever relic you have with a high stat Bone of the Ancients, or if you're still in TVHM, just a regular cooldown relic.
The Legendary Siren COM and the relic alone will put your Phaselock coolown at around ten seconds, so you don't need to worry about putting points in Quicken.
I'd take the Motion tree about as far as Converge if you really wanna go down that path though, because that's a pretty sweet skill. --- Some doors are best left closed, because once open, they're easy to walk through again and again. -- GT: Wretched Owls
Yeah, Scorn does have a bit of a cooldown, but you can use it in FFYL, and you can just alternate using Ruin/Scorn to keep things slagged. Its a pretty nice combo for UVHM. --- Some doors are best left closed, because once open, they're easy to walk through again and again. -- GT: Wretched Owls