Interesting concept, but it'll be relatively more expensive to print so many colours on a deck. But I do like the design right now.
True, but no more so than if he were making any other fully-custom deck. Full-custom decks see to be pretty popular these days - the next Blue Crown deck, Vaudeville, will be a full-custom job, and aside from the LTD., it's been a while since E released a deck that wasn't full-custom. People have been busting on Dan and Dave as well as T11 for, among other things, rarely releasing full-custom decks.
The point of all that being: a full-custom deck would sell better and faster than one that isn't, as long as it's a quality job from start to finish.