@hierarchnoble Well, a lot of people do, because GP support is just an extra. A LOT of people played Duel Commander (which is why a bunch of duel-commander only cards were more expensive than they should - Devastation I'm looking at you) and those people are migrating towards 1v1 Commander. So it's not an issue with official support or whatever, but with people that are moving the market towards this format, that's not as small as it seems. I'm sure Workshops spike has a LOT to do with Aaron and buyouts and RL, etc. But we shouldn't dismiss the Commander unbanning.
EDIT: also, does the link you posted have a list of side-events for each GP?