Innovation is awesome, but even if it's a clever idea people are often too comfortable with the way they usually run stuff to try things that would be better.

I keep trying to tell people you don't need one wizard with ooze puppet, one healer, and 4 evasion type to do Enter the Kobold but no one wants to try...so they wait an hour to fill while I kite trash and the rest of the group I PUGed in 5 minutes kills the bosses.

People are just scared to try new things.