I think a nice feature would be conditional custom fields. So you have your static fields as you currently displayed, but besides the current list of custom fields, to have a conditional field.

So if you pick conditional, another box would say this field is conditional of: and then have a drop down of all the available fields. Once you choose a field, there would be a box that would say parameter. In that parameter box you would say what that condition is, i.e. [attendees] > 2 or something along those lines. I envision any field would be a tag so that way you can call it.

So then after entering that information, this new custom field, which would have a unique name, would only display if that condition is met. This would make the forms more robust. Just a thought.

Eric,

It makes sense though sounds abit complicated.

We will consider such fields to enhance the custom properties in the future.