One of the best missing features for legacy systems would be to have two configuration properties for the ant task
This means the build will fail if there are more than xxxx warnings and I can bring all the rules I like to a project and the project will not add any more violations as it continues on according to my ruleset
timeNumWarningsAllowedStarted="SomeDate" + reduceWarningsEveryWeekBy="yyy"
I would love to see this!!!!