We have the same issue. On some of our projects we have several additional points of contact that we want to be able to add. However, since we have a lot of resources (36k+) we would love the ability to create a custom data field that uses the resources object, behaves the same as Project Owner and ...

I agree, we have several things that we've seen that are considered "enhancements" but are bugs. WF usually tells us that it's to design, even if the design is bad. Example: Report with a filter on project name, if you run the report and click the Show Filters button it shows the report is filtered ...