Chipping in to give a fourth vote to consistency. Here's a good metaphor I've heard: Brushing your teeth three hundred and sixty-five times twice a year is obviously ineffective. Consistency is essential, because it underpins everything else. A bad GM practicing regularly may eventually become good, but a good GM irregularly won't be able to put themselves to use.
Edit History
Chipping in to give a fourth vote to consistency. Here's a good metaphor I've heard: Brushing your teeth three hundred and sixty times twice a year is obviously ineffective. Consistency is essential, because it underpins everything else. A bad GM practicing regularly may eventually become good, but a good GM irregularly won't be able to put themselves to use.