The boxes look super cool! I really like jumbos as well.
To all that are complaining about the kinds of cards Pokemon are releasing in these boxes, and want Shaymin-EX to be placed in one, stop. For the love of all things Pokemon, stop.
Packs, boxes, and other merchandise are mostly targeted at those that aren't familiar with the competitive scene. Collectors, children, and new players trying to jump start a collection are the main individuals that the Pokemon company wants to sell these to. This is why there aren't many competitive cards in these boxes, only the flashiest and most powerful-looking cards will ever be placed in a box.
Shaymin-EX is the most powerful card in the game, period. I understand the frustration people have when trying to obtain it. However, Shaymin-EX, despite being a card that is quite old, is still making a ton of money for the Pokemon company. Tons of people go out and buy roaring skies packs, hoping to pull one of these elusive cards. To answer the question of "Do the Pokemon Company like having a $65 card as a must have?" Yes. Most definitely. Pokemon doesn't value people that try to go cheap. That's why a lot of the cheap decks right now have to use gimmicks and have the disadvantage over a more expensive deck.
Next, on the question of "accessibility". Shaymin-EX being an expensive card does not, I repeat NOT bring down the accessibility of the Pokemon Trading Card Game. "Accessibility" in this case refers to how easy it is to play/ start playing the game, and Shaymin is in no way needed to play this game, it's just a very good card that is good in certain decks when you get to a higher level of play.
There are a couple things I have to go over here. First, the only way Pokemon makes a bit of money off Shaymin-EX is through Roaring Skies packs. If you reprint, and drop the price, nobody will really need to buy the packs anymore, so Pokemon then loses money. What other companies have done the technique you speak of? Next, unfortunately, the Pokemon Trading Card Game's purpose is not all just fun. It's an extra branch on the Pokemon brand, which sprouts from the video games. I would say that the game is mainly another way for Nintendo to make money, hence all the expensive cards. Your part about "max fun" is pretty funny, but what i'll say is that you don't need expensive cards and good decks to have fun in this game. Playing trash decks during an event like a league or a cities can be super fun, as it gives the whole new lighter feeling to everything. It's also cool when your creating wins, as winning with a bad deck is one of the best feelings you can get in this game.
To end this, i'd like to say, Shaymin will only be in the standard format for 1 more season, so if you don't want to play the game without Shaymin being a necessity, just wait a while. Shaymin-EX boxes will most likely never be made.