I just remembered another sight. It's called "the patten game library". He's got some neat ideas too. Check it out its free too. Some of his rules I've modded to play Star Wars games and superhero games. Neat dice rolling rules. I use the galactic heroes rules for figure games. Easily modded and easy for anyone to play. He has space games too. They would be perfect for lego.
Cool. Post it when it's done. I'd like to see. There is a sight called " freewargamesrules" lots of rules, all free. Ranging from easy to complex. I've gotten a lot of ideas from there. Keep on bricking.