Custom Layouts: Expand the available list of columns

It would be nice to be able to include columns from other areas of SI in our custom layouts.

For example, from the Project Explorer, being able to show Client Custom Fields on the custom layout.

Expanding on this concept with a practical example. Our goverment clients who require prevailing wage, we could have a client custom field checkbox to indicate they are a PW only customer, including this in the Project Explorer layouts would show this for ALL projects from the same client.

Another practical example would be a list set for the client to indicate what Crestron MAP the customer is exposed to as a reminder to the estimator.