In reply to Michael Ryan:
Favourite Wall? TCA in Bristol. Essentially because of the consistency and frequency of the setting in there. It helps that the staff are nice too.
Generally I'd like to see more use of big volumes or more featured walls. Having a set of perfectly flat walls at slightly different angles is hardly a good representation of climbing outdoors. I also find it a bit weird when bouldering centres don't have a slab. This is pretty much the only criticism I'd level at TCA.
Taller bouldering walls generally would be nice, especially in places that tend towards standing starts. Regardless of how hard they are, three move bouldering problems are not that fun (this might just be me). This is also a setting thing.
One thing I find people appreciate is where the easier boulder circuits aren't just jug ladders. The downside is that creative setting in the easier grade bands does tend towards the creation of sandbags and excluding those who mainly climb those circuits isn't good. But overall, it should help prepare them for harder stuff / be more fun.
Some walls could do with focusing on the social aspect a bit (most big walls are pretty good at this). Well advertised social evenings / partner schemes, a way to get people talking about the routes (books, online etc), videos of the setters doing the hard problems can be used to start the last one, give people a reason to go to one place to look at the problems then they can discuss it after - all good for building / expanding a community round the centre.
Finally, a standard set of training equipment would be nice. I don't think everywhere needs to be as exhaustive as, say, the Works for example, bu it would be nice if everywhere had both beastmakers / rock rings / circuit wall / Moon Wall / campus rungs, for example. a Separate pull up bar can help stop things becoming too congested, assuming there's space.
Back in the day, the WICC centre used to loads of cheap, homemade food. When the Arch in London opened it had some cheap stuff as well. Most climbing cafes now gear their pricing / menus around high street cafes. Plus there's been a general increase in the price of food in the last few years. This is fine, but it'd be nice if there were a few cheap options that were geared towards the frugal amongst us