Perhaps give us foundations to drop before towers? Need me some grid.
Just a suggestion. :)
Dropping towers down on the cliffs is alright until you think one should fit but it doesn't. A grid or foundation tile that would be required before the tower would make it clearer where stuff will and won't fit.
Sorta like putting down foundations in the DUNE games of old before building on the sand.
So far 6 missions in and really enjoying what I've experienced so far playing on Normal.