As of August 31st, Dominator Sleet and Controller Ice Blast were change to take their correct IOs. When i18 hit, Ice Blast, which once took single-target ranged, was inadvertently changed to Cone, and Dominator sleet was taking single target ranged for some reason. Both of these have been fixed on live -- Dom Sleet now takes Cone and Defense debuff, and Troller Ice Blast takes Single-Target ranged like it always has. :
http://www.cityofheroes.com/news/patch_notes/live_patch_notes_-_83110.htmlBy the way, the patch notes do not mention Dom sleet, but I've respecced my Dom on Freedom recently to see that her sleet no longer took the Decimation set I had in it.
Anyway, there are a lot of us eager to spec into the latest Ice Mastery APP Dominator build, and generally won't really do so without the aid of Mids. I'm curious to know when this will be featured into a Mids update.