25-30% reverse deep/bomb changes. and we are all good, btw make spellsteal remove magic not steal em (like SP dispel) and is fine
They had to make it that the longer frost bomb is on target the bigger damage it deals. Just like combo points work.
Sadly for such change i think they will need alot of coding.
Also they could add a glyph that removes the "steal"effect from spell steal(so it works as purge) and its mana cost is reduced by XX%.I know it wont be spell "steal" anymore but i see many mages actually would like such change.
IF they dont want to make such changes they should just remove the previous nerf to frost bomb and make it explode after 5 sec not 6 as it is currently.