Ray of frost for pve

today im just trying ray of frost in a pve environment ( together with ice flows to cast it when moveing so you wouldnt cancel out the channeling)
just because i hate glacial spice and im trying different things. and im amazed how much dmg it does when you get 10 stacks cryopathy … its on par with what glacial spice does , but it does a decent amount of aoe aswell.
but for pve the cooldown just sucks as it is now . you basicly would like the cd to be par on lets say 20-30 ish seconds so it can be part of your rotation and can be used every trash pack and multiple times on a boss fight

i got a question/suggestion about the talent tree

whouldn’t it make more sense to swap splitting ice and thermal void in the talent tree?
and merge splittering ice and splitting ice and have that talent in those 2 positions?
and have it to somehow let ray of frost be lowered (e.g) every icelance or flurry reduce the cd by x?
so it doenst get op in a pvp environment?

i kinda like ray of frost over glacial spike