Norton Commando Seat Pan

The pic on the bottom is his inspiration seat pan.

He wants to keep the weird sissy bar thing and its causing design issues.

Personally I would like to shorten the rear frame loop ( taking that sissy bar with it ) and the seat pan to match.
Norton guys are kinda funny about modding the bike but the way I see it is - the sissy bar welded on the sides of the frame isn't original either.

If you have some better design ideas , let me know. I'm open to all ideas.