I agree with the others. It leaves it open for expectations you are not willing to meet. It's giving them control to change things.

If you really feel the need to touch base in this manner I would ask something along the lines of list the top 3 things you like about my daycare and list the 3 things you like least. Then you can get a sense of what they do and don't like but with it being less open for them to make a list of demands/changes.