Custom Field Dependent Dropdown Merged

Hi, I would like to suggest a simple two or three level dependent drop down for Custom Fields.  I realize Custom Tables may solve this, but I was thinking of something without that level of complexity.  Also, Custom Tables are only available on the Enterprise plan and that is a big step on the license fee.

What I mean by "dependent Dropdown," as I've seen this named various ways, is the ability to have one custom field determine the value of a dependent one.  For example, if you had fields with Cities and States, you would only get select Cities in a given State if that State was first chosen.  Or, if you had a food list - the first option would be "fruit" or "vegetables" or "meat," and the individual types in the next drop down - "apple" or "orange" if fruit is chosen, etc.

I think this would give another level of usefulness to already powerful custom fields, and hopefully you guys could simply pull what I assume is functionality already present in Custom Tables and surface this part of that to customers that aren't all the way up on the Enterprise accounts!

Thanks for considering!