Some of us remember when such an idea was tried, Michael, and the result was a lot of nastiness, hurt feelings, and banning on both sides. However, I've been dialoging with such people since I started my career (only 8 years ago), and I think the way to move forward is to discuss exact principles and practices, not ideology. If someone has an EF Mass with chant and orchestral ordinaries, what do I care if he's a "progressive"?? Or if I go to a church where every song is by (insert offensive composer name here) led by a smiley wavey cantor, what worth is it if the music director tells me he's a staunch traditionalist? If we can avoid identifying people by liturgical/theological "camp" and stick to narrow discussion, yes, I think a lot of work can get done between a wide spectrum of viewpoints.