@ Goresplatter, i really like the idea of a level editor building your own factory! It would really benefit from some kind of money system like you said, to purchase defences and upgrade sligs etc.
How about throwing in some LittleBigPlanet-esque online?- what if you could upload your level to a server, where other fans could play as Abe and try their best to beat your security and reach an end point? With this trial and error relationship between creator and fans, it'd be fun to try to improve on the flaws in your design to create something truly impenetrable
