Communicating requirements to kernel developers

Perhaps it could be useful to have a *separate* e-mail list for userspace developers to post on and interact with each other as well as a self-selecting group of kernel developers.

The idea would have to be that kernel developers should sign up to *help* userspace programmers with requests (either with finding a way to proceed, finding a kernel developer who can help, or with understanding why the request is not appropriate). The trouble would be keeping the tone civil and discouraging flamers from flaming / continuing to contribute.