I believe they were discussed, but a few month ago name formatting changed so you get name like this:
- Friedrich Wilhelm Ludwig Zähringen
- Friedrich Wilhelm Ludwig (Friedrich I) "Grand Duke of Baden" Zähringen
Example: http://www.wikitree.com/wiki/Z%C3%A4hringen-7
This makes confusion, since in links you can't see if it is Friedrich I, II or III.
With I in suffix it would look nicer
- Friedrich Wilhelm Ludwig Zähringen I
- Friedrich Wilhelm Ludwig "Grand Duke of Baden" Zähringen I or 1st
Example: http://www.wikitree.com/wiki/Cole-333
So maybe you should discuss it again. This are my thoughts from user point of view. I don't know much about aristocracy.