In opposition to quotes:
It deviates from the philosophy of "just being a message board". That is, it introduces something into the mix that is separate from posting/reading messages and is specific only to this *kind* of message board.
It costs money. As a percentage of the site's current income, it'd be a very substantial cost.
There will be a very substantial investment of development effort on my part. Everything else would take a back seat for quite some time.
There are no assurances it could recoup its cost and we don't currently even know how likely it is to do so.
It adds clutter to an interface we're trying to keep fast and simple.
We definitely wouldn't make it available to free members and probably wouldn't make it available to Grandfathered members, although if that were the case, we'd offer a substantial "upgrade" discount (as in far less than $50). This could result in alienation of some Grandfathered members who might expect (for good reason?) that all future features will be available to them, no matter what the feature or cost.
