I can say with certainty that we won't consider extending the time limit for entries.
I can't speak for the other two judges, but Drifty and I have 5 kids to take care of(one of them being a very needy 10 moth old) and jobs. We're already pale faced looking at how may people have joined with the 30 minute limit as it is, lol.
We want to be able to consider each submission individually with the time and attention each one with deserves. :)