I've done your survey. It could really do with an 'any other comments' box though. I wanted to say that a range of vegetarian options always cheers me up. I also think it's important to ask vegetarians. It's always disappointing to see veggie options that don't have a decent protein content.
I couldn't find on your web site about where this will be. Your survey suggests that you haven't decided yet. I may be biased as I work not far from Waterloo but I think that SE1 is where it should be: pay less rent and keep your prices down!