The best way to reinforce your support for a feature is to vote it up on this site. We don't keep a public backlog of things we intend to do (because it changes too often and we don't want to give people hope, then disappoint them).
Everybody in the company, for instance, knows that per-project custom fields is our #1 customer request.
Our statuses go basically like this:
status-proposed
status-evaluate
status-completed
And at any time, we might do status-deferred. We generally have a good reason for doing status-deferred. You can check the deferred requests out here. If the justification given is not up to snuff, we might not have fully understood the use case and the value in supporting it, or might have inadequately explained why we're loath to implement. Please let us know via email and I'll make sure we go back, fully understand, and fully explain.
The specific request you reference here was answered by an engineer in the early days, so is due for a reconsideration.