Currently, Custom Properties can only be applied to the Sheet Set. Adding the ability to create Custom Properties per Subset would greatly add to the SSM functionality, making it less of a frustrating/limited tool, and more applicable.
Issue/Example: Agency Standards require Plan Sheet numbering to be Alphanumeric. Typical Sections are numbered B# to B## Plan and Porfile sheets are F# to F##, Traffic Sheets are H# to H##, etc. Since we cannot add a Custom Property to Subsets, we are unable to set the Total sheet count for THAT SPECIFIC Plan Set. Either we have a Sheet Set for each discipline, or we edit the attributes manually (or with GATTE).
We also utilize fields and the SSM for PE stamp information but are unable to specifiy that information per discipline without Subset Custom Properties.
Another Suggestion would be allowing the user to assign a block definition to a Custom display/visibility setting. We may have 2+ PE Stamps in the border, a Prelim Block or % Status Submittal. Basically, allow the user to turn that block on or off for printing.
The SSM could be one of the most useful tools with a little attention. Right now, its just useful enough to be forced to rely on it.