The icing on top of the cake. You know the maps you create? It’d be awesome if they could be shared easily -- instead of having to download them as their own separate “mods”.
More than that, it’d be awesome to control your own army against someone else’s. Or just joining buddies and screwing around by moving troops, possessing them, and just generally causing havoc.
Similar to the previous mod, without players being able to exhibit more control, I am not really sure how much fun this would be.