How about a tool which would allow you to see the various programs into which miles can be transferred from a particular program? For example, let's say that someone has a ton of Virgin Atlantic miles, and wants to know what programs those miles could be moved to. You could choose Virgin Atlantic and the number of miles, and the proposed tool would tell you all the programs into which those miles could be moved. (Even a basic tool, showing only direct transfers, would be helpful).

Such a tool would help people, for example, who are trying to decide whether to burn or transfer, and it would also help those who are thinking of moving points (such as Amex MR points) into an particular program, but want to know if those points will be "trapped" if their desired award turns out to be unavailable.