Problem with bless is that they made blessed smoke give invisibility, this is a problem because you only need one smoke to invis the entire squad, and with invis being extremely powerful in it's current state, you can pretty much chain invis with chameleon cloak and multiple blessed smoke cover if bless costs no source and just make fights simpler and more dull than they should.

I personally feel like they shouldn't have given blessed smoke invisibility, my suggestion would be to change blessed smoke bonus to something else entirely, perhaps in a future enhanced edition, increase bless's cooldown and remove the source cost.

The geomancer wall is also very underwhelming, I was expecting a wall that blocks line of sight and movement like the ice wall in the first game, but instead the new wall can be damaged and doesn't even block line of sight.