Well, the only reason I'm even attempting to answer this is because you directly asked - meaning I hope you'll accept the answer
http://www.ootpdevelopments.com/boar...splay.php?f=16
Doing a quick calculation, there are probably about 1500 ideas and suggestions in that forum. PbP is one of them. I suspect many of the ideas are fairly simple (IE: adding more variability). but others are certainly difficult (IE: financial coeficient, H2H).
It's not the individual ideas that are tough, it's the fact there are 1500 of them.
Henry