Cool tileset, are you going to be doing more like this?
Viewing post in ICON Isometric Tile Set + Bonus Tokens comments
Ground Troops, Alien Invaders, Robots... that type of thing. Maybe like an XCOMy type thing. I once heard some interesting pitches for X-COM games that never materialized. X-COM time force, where they go back in time and collect important figures in time. That might be an interesting idea for a strategy game.