I've been working on this system for the last three years. I think it's ready for prime time. I'll be doing full rankings releases this year after week 6 or 7. Not sure when enough games will have been played to ensure all teams are linked. The Ivys mess this up with their late start and limited OOC. I'll be ranking FBS, FCS, as well as an overall D1.
The game simulator was a byproduct of the rankings system.