I am with Warl, as I am the player he was talking about. This is a great idea, but like him, I have no clue how to go about starting something like this up.
A character generator would be nice, but not necessary. The main thing we were talking about is just storage for the community of characters we have created.
And as far as not much of help to GM's, I think it would be a boon to a GM. It could serve 2 purposes: 1.) A library of NPC's we could pull from from all different levels, especially if the characters are being modified to higher or lower levels and restored. 2.) As a GM of this system, would you really want to generate a last minute character for a new player to RM because one of your players brought a friend along to see the game. I do not know about you guys, but I learn a system faster if I am playing and taking part in the mechanics of it instead of observing. And as a GM, I would dread that last minute character creation without some type of software that I am completely comfortable with. Instead the GM could go to the storage sight and get a level appropriate character for his game. Then spending a few minutes to edit out anything that does not fit his world or collection of house rules and BAM !!!! A character for the friend to play on a one night stand scenario. Then if the friend likes the system and the GM is willing to let him join the group, then let him generate a character on his own within the GM's world when both player and GM have the time to do as such.
I am with Warl on the compatibility issues as well. I do not think the skill bonuses differ except through higher levels. Even though the bonuses are higher in RM2 than they are in RMSS, RM2 requires a different method to generate those skill bonuses. Whereas RMSS just does simple addition due to the division already being handle by the lower stat bonuses, if that makes sense?