This one is really a question - should we change the "Blocker" status to two statuses:

"Build Failure" which means that this blocks the build from completing - a very serious situation, since it potentially blocks work unrelated to the change that introduced the problem.

"Build Warning" which means that a new warning message output from the build was introduced. I would like us move to a policy of extreme intolerance for warnings (with lots of them enabled) to enforce very clean and portable coding style; this would let us track these specially.