Feels a little selective to me, to make your point. As has already been stated, you missed Little Mermaid, and you felt some reason to eliminate Fantasmic, due to it not being able to be done at 1pm. You also skipped Beauty and the Beast stage show... I have heard rumors, but there is no idication it is going anywhere, and if it does, it would certainly be relplaced.
So take you 2:45, add half an hour of fantasmic, and say 20 minutes of BatB, and you are up to 3:35. Toss in 2 hours of eating time, snacks, lunch, dinner, and you have gone to 5:35. You have to walk to places, and stand in line for things, toss in a meet and greet and you can easily be there all day.
I'll be there next week, and I am definitively going to DHS. I am planning a whole day, and I will be willing to eat my words if I am wrong, but I am thinking it will be a nice day. The only difference between now, and during construction is LMA and I don't usually see it.