I've personally been looking at it less like VDH is a mistake, and more that the VGC prices were temporarily depressed based on the news of VDH. I could be wrong but I remember looking a year ago and I thought VGC was pretty firmly around ~$320 (I'm not sure where to look for historical data). If anything I made the mistake of not buying VGC during the time where it was sub 300, but I was saving for VDH and while some people will call me crazy I do want to use my
disneyland points every now and then in combination with my Grand Floridian points in disneyworld for a big vacation and wanted unrestricted points.