1. For starters, can we add ice to stone stockpiles please? No reason why not to. On maps where ice is not possible like deserts it can be left out of the list.
2. Since ice is for all intents and purposes water it can be gathered in a solid form and melted in a kitchen (or possibly any forge) and stored as pure water in a barrel. Speaking of which players should also be able to store water in barrels instead of relying on messy ponds.
3. Catapult ammo which always explodes into a cone of shards on a hard impact. Ice shrapnel and boulders will only hurt "soft" targets, hard targets like iron men will get knocked about and such but will suffer little harm.
4. Ice-tipped practice bolts. Can only be made and used outside in the cold but the shafts can be gathered, given new tips and reused. This would require some sort of bolt re-stacking.
5. Ice blocks for smooth ice construction, alternatly allow engravers to smooth anything made of ice post construction.
6. An ice-house for preservation of corpses, skins and fat from butchered animals and stuff awaiting butchering.
7. Sinking heated metal or stone rods/pipes into brooks, rivers and the like to prevent them from freezing.
[ December 15, 2007: Message edited by: Tamren ]