This game strongly reminds me of another favourite of mine, Massive Assault, both in its simplicity and abstract presentation... actually there was a game from the Spectrum/early console era that this game reminds me of, but I'm damned if I can remember what it was (or much of anything about it).
One thing Massive Assault has which I've found to be a great feature, is a recorder. Once you've won a battle, or reach any point of a battle in fact, you can record a demo and play it back later. Great for getting assistance, looking over favourite wins, but especially good for learning from your mistakes.
Just wondering if such a feature were planned, or hopefully considered for any sequel/expansion