Sounds resonable. I will open a ticket for your suggestion.
Just to inform you that DbVisualizer 9.5.6 has just been released with an option to hide data types in the References graph.
Easiest is that you open Help->Check for Update in DbVisualizer to perform the upgrade.
An alternative is that you download from our web site: http://www.dbvis.com/download/
Thanks a lot! I'm happy about this useful option.
I would like to have a further option concerning Graph Controls.. Node Content property in References tab: Columns w/o Data Type. Means this option would be like Columns but showing the tables without field data type, but only field name (see attached file).