How important is a Sanctuary service?

As we look at alternatives, one possibility has been to move to two services, both in Celebration Hall. However, I seriously doubt that possibility. One of the primary church niche areas we fill is that of a mainline protestant congregation offering traditional worship in a traditional setting. It does not seem wise to abandon one of the things we can do better and offer more effectively than most churches. I think that our commitment to offering a variety of worship  services mandates we use the sanctuary on Sunday morning.