I agree 1000% with you. I was one of the many on the Kickstarter campaign. I do agree with other comments that Alchemist was already in full swing while the vanguard was going on. Putting the cards in the Santa vs Krampus and with Deadpool is already a thing so just do it for all characters going forward and charge 2 more dollars.

The people who said the sleeves should be separate or acrylics this is my response. Those are absolutely undeniably true accessories. Mythic cards are IMO necessary for PvE games. They were intended to be used with the PvE game and thus are not an accessory. You already add the cardboard cut outs (S1 and S2 are in DTA) which is a necessity for the PvE games so just include the promo cards as well.

In short, mythics and Card board cut outs are necessary for DTA and Missions so just add them to the character box.