Have they thought of t shirt cannons? Those work pretty well in the NBA.
You don't just "get" hardcore fans by making a decision in some office. By playing some BS gimmicks on a big screen or changing a logo. You can facilitate popular following by making tickets affordable and help out when fans want to organize something. But there needs to be a demand for that and that can't be artificial.
You either are passionate, or you are not. There is nothing you can do to change that other than through long term results.
In Seattle (and most places), if you win, they will come. If you don't, good luck. True story: Tickets went on sale for the 2000-2001 season. Two of my h.s. friends (they were students then) were the only two in line. This was just one season removed from four straight postseason appearances and two straight NCAA appearances. Interest dropped off really quickly. Granted those late Bender teams were kind of awful...I remember Michael Johnson (namedrop: I knew him in elementary school) and Bryan freaking Brown and nobody else...
People that say the Seahawk fans have always been loyal and crazy like they are now can fuck off and die in a fire. I have been to several games were I walked up to the stadium and bought a ticket at less than face value. They have also had waiting lists go from 50,000 down to where you could walk up and buy season tickets right before the first game one the year. Winning is all that matters.