I've played out regulary 2-3 weekends per month (some Fri or Sat only and some both) in my area for the past decade with three different bands, each a different genre. Musicians who can play are important, but fer crying out loud they need to be able to play with and off of each other. No wanking or showing off individually- play for the song. Virtuosity is worthless, groove is king. The other thing is VOCALS. You need to have awesome vocal talent to play out regularly, this is incredibly important. The more good looking people that you have in your band the better. I'm not being vain, I just pay attention. Don't look like a homeless person- dress up a bit, lose some weight, SMILE and let it be apparent that your having a good time. Connect with the people that you are playing for and all of the other important efforts that are mentioned in this thread will have more of a payoff.