I know GenCon is later this year so Event Registration opens later but having it be on the Sunday of Memorial weekend is a horrible idea. That is a weekend may people travel and/or have family events. By having registration open on that Sunday you are forcing people to either risk not getting events because they have obligations that day or back out of what may be long standing traditions for them.
I know that could be said of any weekend but the probability of it affecting people goes up and you are essentially taking away people 3 day Holiday weekend.
Can't it be pushed back 1 week?