I'm not sure where the commentator who suggested 35% of the top 40 Legacy cards are on the reserved list got his list from. The MtGGoldfish version of the list has only Lion's Eye Diamond in the top 40 cards played, and none in the top 20. This excludes lands, but a very simple solution for the reserved list would simply be to backdate the original condition (cards not reprinted in 4th, Ice Age or Chronicles) to cards not reprinted in Revised or later.

I believe the number came from counting up the actual cards played in winning decks (not individual names, actual cards played counting each individual copy). And yes, the largest amount of that is the dual lands, but they’re not leaving the Reserved List so you have to count them. In short, when the world can’t play the required mana base of the format, it’s a poor format to push worldwide.

During preview seasons Wizards usually reveals preview cards to various third party Magic affiliates like the Manasource or MtgGoldfish. Is there a particular process for choosing the card these affiliates get to reveal?

We have a meeting where we decide how all the preview cards will be previewed and by whom.

Have you read the MTGGoldfish article on the changing definition of "Mythic Rare?" It's a great exposition of how Mythic have changed from their introduction into the current situation, where more and more each set are Standard staples, required to be competitive.

And a staple part of the whole article is a misunderstanding of a quote I made seven years ago.