I second that disappointment about the D&D deck. I've got it arriving soon, but have heard news of repeated courts. I think they could have done so many cool things with the deck and had the chance to go all out. I think my disappointment with the D&D deck is that exactly what Fred said. It felt like they were selling it as a full custom courts, but they really weren't.
I think it varies. As a collector, I love a full-custom deck done well. Maybe unique and make it special. But I think it's that that the new designers are honest about it. I don't mind semi-custom decks. They can be really nice too and there are quite a few that I want to add to my collection, but I want something more to it whether it be the idea behind the deck is cool/interesting (ie. Legends deck, all black decks, any CARC decks, etc.). I think, for semi-custom decks, I want to know before hand that's what it is. I think all it is is transparency. What I'd like big companies to do would do their own signature decks, which I guess Ellusionist has done already with modify re-drawn courts and pips.