Hey Jim!
I feel the same way haha, coming up with creative game ideas has never been my strong suite.
I feel that keeping within our bounds would be a wise decision, one impressive system that is perfect compared to many systems that are not entirely complete may be a better option. Local Multiplayer is what I plan to stick to for this but building alone side a single player mode while keeping the AI simple enough to fit into my time frame. Although I wish I had time for all of it!
But it seems I am up against some good minds! I will have to try and prove my worth haha!
Good luck!
Calum.