that have seen Zoop, I am pretty sure I can knock up a quick imitation quite quickly for you guys to peruse.
At least then we can see what graphics and music you guys can come up with.
also, you need to decide on the format.
Is it going to be OCS/ECS compatible? Is it AGA only? Is it trackloading, is it HD installable, this kind of thing.
Assuming I have enough time, I will knock up a Zoop style clone and upload an .exe for you to check out.