I should be able to see the appropriate meta-Properties when I create a Property
Summary: This is the general case of a common specific problem: many Types really want to expose particular meta-Properties as visible to the User when he creates/edits a Property.
A good example is Preferred Image Size. This is only relevant for Photo Type, but is often appropriate for that. When I am creating the Property, that should be offered to me to change as soon as I choose Photo Type -- I shouldn't have to go searching around to create it.
We already have one of these -- Link Model. We should generalize this mechanism. A Type should be able to declare the meta-Properties that should be visible when I create a Property of this Type.
Once this mechanism exists, go through all of the meta-Properties, and figure out which Type(s), if any, should be pointing to them this way.