This is a good suggestion, and I'm sure we will see some delegates setting something like this up. In fact they don't even need to run a delegate to get the funding to set up an exchange point, they can issue a user issued asset to raise funds for the start up costs of the exchange point.
Btw there is no reason to address these suggestions to BM. Any person who is willing to do this can simply get started right away and get funding from the community either as a delegate or by issuing an asset.
(If only UIA fees were dramatically decreased...)