I also agree that HS isn't worth the admission (at least right now). MK and AK have so much more to offer.
Especially not for a full day. When I was there at DS I had Monday after the race as my "Free day". I had FPs for Animal kingdom that morning and then later in the afternoon went to HS and quickly did ToT, RnR, and ST and left. Only there 2-3 hours, got in what I wanted to do and left. Would have liked to do MM but with the current construction didn't even want to mess with it.