If they're playing head-banging music at 2am, great, we have noise ordinances for that. If their customers are rowdy drunks, great, we have a statute addressing drunk and disorderly conduct. These gripes (that haven't actually happened) aren't zoning issues, they're things that if they happen, there is already a set of laws to deal with them. You call the cops and they stop the offending behavior. I really don't know how a biscottis'esque restaurant/coffeehouse somehow translates into automatic mayhem, but on the 1% chance it did, so what, we have laws for that. Something that likely will not happen, and that is already addressed by laws outside the zoning context if it does, isn't a valid basis to stop the place from opening, IMHO.