My comment about not wanting to make it easy for vintage MOTU-only fans to walk away from a sub with POP characters is that I firmly believe retaining fan support for an all-inclusive subscription is the best chance we have to see less popular or more obscure MOTU characters (such as green Trap-Jaw, Procrustus, Rotar, the Castle Grayskull spacesuit, 'The Magic Stealer' wizard, Kothos and General Tataran, etc) finally get their day in plastic.
The MOTU fans are the base of this line, if they are able to walk away from the toys I fear for the future of the line. I want a green Trap Jaw so I'm prepared to put up with some NA figure because it is the sacrifice we make to keep the line strong.
Now if POP had it's own sub, NA had it's own mini-sub and the main sub was MOTU (vintage with filmation/ comic/ 200x etc) wouldn't your wants be more likely?
I think that this all inclusive sub for all it's ups and downs should be a starting point only for the other properties... giving those vintage only buyers some relief from the mundane elements of later fictions.
If you have She-Ra, Bow, Swiftwind and Frosta... you can buy the 8 (?) figure sub and get all the other colours that make up the great rebellion.
If you have Flipshot, Optikk and SlushHead... you can buy a 6 figure sub and get, I dunno Flogg, Quake, Sagitar, Hydron, plus NA he-man and skeletor.