So had a great time this year at Gencon. In terms of setup, this was FAR better than when I was there in 2014 and we were in the middle of the convention hall.
I'll echo Eryndur above regarding the DDXP; it was extremely hard to hear our DM. The private ballroom for the DDXP was a nice addition, but there were so many people in such a small space that it made it very difficult to hear anything. Our DM was an exception DM, but in terms of vocal projection he was lacking. But beyond that, the DDXP was great.
In terms of what it's worth? Hard for me to say. Would I prefer if it was less money? Yes. Yes I do. Will I pay $150 next year to do it? Yes. Yes I will. So they don't have a huge incentive to decrease the amount. To have the same party members, same DM, running a coherent storyline, with easy mustering for the final 3 games, easy access to ice water, in a private hall, complete with our own mini-epic....I didn't feel like I was cheated for the cost. Did it feel expensive? Yes. But not unreasonably so.
My friend and I also lucked out and managed a back-to back-to back session of HILL with generally the same group, and the same DM, each time which was also extremely fun.
A little more official WOTC presence, or D&D presence across the entire Con, would be nice. I get the comments about Paizo and the jealousy with their setup. But overall, it was a better setup than I saw in the past, even when they DID have more WOTC support.
My one disappointment was the Sunday epic. It wasn't that it was bad, it just didn't feel truly "epic", but rather a mini one similar to in the DDXP. Kryptgarden in 2014 definitely felt more "epic" and had a more unique feel to it. And I've still yet to see them do anything to rival some of the epic events I've peeked in and watched Paizo do, complete with overhead projectors and the like. But overall, it was a great time.