Other (research) frameworks I've seen before
actually allow you to step *backward* in execution
time in order to track down how you got to the
invalid state in the first place. Granted this is
computationally expensive but if we have such
options in Netbeans (optionally enabled) then we
could save *a lot* of time debugging. Instead of
repeating the "run, breakpoint, debug" cycle 10-20
times before you track down a bug you could run it
once and if the problem occured a few lines before
the breakpoint you can track down exactly why
things went wrong.

    This would give us a huge benefit over Eclipse
and all other competitors!