SEA2 is open for that kinda stuff. PM one of the CMs and give them your idea and I'm betting they'll do it. The AvA is setup for week long historical events. They have done what you are asking before but it dint see much interest. And as someone else said when ever TT is up it screws with the AvA. Most of us have given up flying in there on Tuesdays because you lose UDP right as you enter and your vox doesn't work.