There should be two types of MiddleMen, a group that handles rsgp & rs Account transactions, and one that handles Paypal, LR, and Alertpay transactions.
Well it is a good idea, but no one here as enough credentials to be an OMM yet, I would say you need atleast 10-20 vouch's as a normal MM to be upgraded to OMM, Which I don't see happening soon because there are not a lot of deals being made in the market.