Powdered snow should evaporate in the Nether

Powdered snow is really interesting to use in the Nether -- at least so far in the snapshots -- because it allows you to put extinguish yourself when you're on fire and it cancels fall damage when you place it at your feet before landing (in the same way that a water bucket does in the overworld). Those are great features that should stay in my opinion. 

However, to me, it doesn't make sense that Powdered Snow should just stay around in the Nether, but it shouldn't evaporate instantly like water from a water bucket does, it should simply stay around a couple of seconds, then evaporate, with the possibility for you to pick it up before it goes away.

This way, it would add useful strategic features to the Nether, great for PvE, PvP and overall navigating the Nether, without being too unbalanced.