I am curious, I know that XmlData and DirXMLData attributes (Where the
rules are stored in policy objects) are Stream syntax attributes, and
thus should not have a real maximum size.

But do they?

What is the biggest rule (only useful count I can think of is line
count... Turn on line numbering in the Designer prefs) you have?

I have a couple at a smidgen under 2000 lines.

Are there any scaling issues?