Some services/forms have a large number of source/targets and when I am trying to create mappings I have a hard time finding what I want to map. It would be really nice to have a way of filtering the source/target parameters. Add a filter text box and as I type (either field title or id) the values would be removed from the panel.
Also maybe filter by field type (i.e. radio, dropdown, etc).
This would make it much more efficient to locate the items I want to map when creating a service configuration.