I agree. Knowing when the class is, how much it costs, how long it is, will someone be able to compete the same day as the class, etc would be helpful to new shooters.
I also think that 16 at CC for January isn't too bad. Many IDPA folks are 'fair weather' shooters. How many January's in the past several years have we even had a IDPA match in January?
Having flyers available at as many CCW classes as you can find will increase IDPA matches. Granted IDPA is a 'game' but any new CCW holder will be able to improve their skills by participating. It would be good to appoach new shooters that way, that it will improve their skills.
my 2 cents.