About video intros, you could make it mandatory for anyone who's competing in BF competitions to put the official intro at the beginning of the video.
Also, an official (ALLROUND!) BF comp few (2?) times per year would be a good idea IMO. Throw in some small sponsor prizes (Pele Sports, Calle, Monta, etc.) if possible or maybe even better, get some well known freestyler (who can be a judge also) to give away something, like a Footwork or Tek-Neek shirt, etc.
Also, annual BF videos with its members, like the '09 Xmas video would be a good thing to do.
Maybe be more active on social networks? The fan page on FB, for example, is pretty dead. What Boomsjakie is doing with his fan page "I am a football freestyler" is what you should aim for - post recent videos, various news, rumors, etc.