Custom Objects: Add Ability to Filter Relational Dropdowns

Hey Guys,

It would be really awesome if we could filter the selections for a related object based on conditions.

Here's a hypothetical example:

I have businesses (an object) that I only want to display in the relational field dropdown selector in my contacts collection if they meet certain conditions like say being a brick and mortar type business. This way instead of displaying the whole collection, it could be narrowed down to specific group of objects that I want to see and pick from (to match a business with a rep, etc).

Thanks!