In reply to Steve Mayers:
A sauna would be nice, but I can't see it being the deciding factor in why I would choose one wall over another.
An old fashioned Spray Wall, like the Beast Board in Blocfit in Brixton, would be pretty sweet though.
Maybe having a section dedicated to comp style routes would be cool.
Additionally, a separate room for exercise classes, e.g. Yoga or core sessions, could go down well. It's something that is always popular in Boulders. Since I moved to Cambridge from Cardiff, the centre here wishes it had space for classes.
Post edited at 09:41