Good question, to help me explain this! I suppose in a way I am proposing only one Category for descendants of Edward III, but with instructions explaining that it is to be limited.
Under this category would be Sub-Categories for some generations. And potentially we could start with only one or two (or three). For example, one long term goal might be would be to achieve 5 generations: 5th, 6th, 7th, 8th, 9th, 10th ... or less for that matter.
In any case I propose nothing for generations less than 5.
The aim is to create "gateways" between medieval families and modern ones of British descent - two different genealogical worlds than many people want to link. (In a sense, the Americans are showing the way on that with the Magna Carta project but their gateway focus is specifically oriented to link to certain emigrants.)