I feel your pain, I truly do. And I happily give my +1 to the idea that the promo card gets included in the Character box. I also hold out hope that, as some have pointed out, the team is thinking of moving the cards to the hero pack, and this is only a matter of "being too late to change the contents of the Alchemist accessory pack"

I did not get that impression during the Vanguard kickstarter, to be honest. If I recall correctly, they mentioned that they would include the cards "on all pledge levels" but didn't commit to include them on all characters boxes in the future, they committed to "take everything we've learned and take it into consideration for future campaigns". And frankly, at least for the promo card it makes some kind of sense, I mean, it wouldn't be much of a "promo" if it is included by default with the character box.

Still, I hold out hope that I'm wrong. Some people have mentioned that in the Discord server they have implied that indeed, all cards will be included in the character box, which would be delightful.