I was working on some project and actually needed some field in Nodes table which was computed based on IP_Address. So I created Custom Property of VARCHAR data type and then changed type to COMPUTED and applied formula (using some scalar, custom developed function). Everything was working fine except adding/modifying node due to type of property. Then I need to run Configuration Wizard which failed due to that as well.
I would like to propose to enable support for such type of fields which may come handy in specific installations.