So DOG has grouped all of the sets into 3 groups: Core Set, Extended Set, and Most Recent Expansion. My question as a long term thought, as new expansions come out do you intend to keep the line drawn at the first 5 expansions (or whatever it is) and do you intend to keep these same 3 groups indicating that the extended set will continue to be the largest group by a massive margin.
It's not a big concern right now, but the same thought crossed my mind. Guess they'd have to "move the line up" to avoid the future disparity between Sets you're mentioning.