I've got to agree with Jes on this point. There's no reason a restaurant needs to offer something for everyone. That's the great thing about restaurants. If you want Italian food, you can find a place for that. If you want seafood, you can find a place for that. If you want Cuban food, there are places for that. I would never go to a Cuban restaurant and expect to get chicken parm.
If the menu at a particular restaurant doesn't appeal to you, don't eat there. But don't expect that restaurant to change to suit your tastes.
All of that said, however, if a new place opens and business is not good, then I agree that one of the things they need to re-evaluate is what they're serving. Personally, I think the lack of ADRs is a big deal for a table service restaurant at Disney. Why they thought having a system that is totally different than every other restaurant was a good idea is beyond me. When we were there, we walked right past the place just assuming we wouldn't be able to eat there since we didn't make reservations. Of course, we wouldn't have gone there anyway because of the high prices but that's a separate issue. We didn't even consider it an option.