The reason for putting a plug on Staging for now is to make sure we don't run into the old problem with Mirrormax and people filing Ubuntu bugzilla tickets for Backports related issues, and support channels being flooded with such problems.
I have to agree with them. No matter how much you label "THIS IS EXPERIMENTAL -- DON'T CRY TO ANYONE IF YOU BREAK YOUR UBUNTU" on the repository, some still don't get it.
I believe an easier to use "personal backporting" system is going to be the best, because no matter how much I try I'll never make everyone happy.... Some are more bold and daring, while others are more conservative. This way, everyone is happy :) great!
What about the quality of the resulting deb. Will it be acceptable for official backports (after testing) ? If not it would be nice to have some "how to backport properly" so people can also learn how to do it "properly".