I don't know if this would be good or not, but should area attacks damage the terrain? Or an ice blast against an enemy in water also turn the water to ice? (Although the latter raises questions of if the person is now just on ice or if they should have some sort of 'stuck' status.)
For example, in the local match map where the majority of the map is wooden (damagable) panels, it makes sense to me that some of the psi attacks that hit an area should damage the panels people are on as well as those that they are not on. I could see the question of whether it's worth damaging panels in order to hit an enemy as an interesting tactical aspect, as I could cut myself off from a path if I hit a given foe. I'm not sure if non-area psi attacks should also damage the ground (could see it either way, depending on how you want to make the 'fluff' of the power).
Also, if it would be possible to target terrain someone is on instead of the person, that could be nice. (Break the ice or a floor someone is on, even with a sword, and send them into water or lava.) I could see it being too annoying to be worth it, though, either on the coding end or from a player perspective, depending on how we choose which to hit.
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Overall, great game and I'm enjoying seeing the tactical aspects come to light.