It is amazing for grinding, especially combined with the freeze on
frost shock. I'm not a fan of the freeze-on-frost-shock talent in
general, but it is pretty awesome to get one of those nasty pushback-
causing mobs all up on your face, knock them back 20 yards, and shock
them in the air so they're frozen in place when they land.
I'd also say it has a small amount of raid utility in that way, for
trash or for boss adds (if susceptible)... you can buy about 4 seconds
for you or a healer on a loose mob.
If they altered the rest of the tree so that 28 enhance wasn't a good
move, I'd certainly put a point into this over NS as Elemental.