Asper, you missed my pirate!
In fact, I forgot to write something for both Pirate and Crusader. I didn't originally intend to write a text about each card, jumped to Godfather, then kept writing and writing, and ultimately changed the "I won't write about every card" to "hope I didn't forget any" because I forgot I skipped the first two. Sorry about that. So here goes:
Pirate: I feel this might be a bit too negative. The advantage it gives to yourself isn't all that impressive (perhaps +2$ would be fine), and the overpay just means foregoing a 5$ to drag down other players with you. Given that it doesn't really look like a strong card, I feel this is too high a cost for it to matter. It doesn't look overly complicated, so that's a plus.
Crusader: It seems this card is worthwile only when at least some other players haven't gained a Crusader, as otherwise you are playing a cantrip to change your and their deck in the same way. Which, on the other hand, makes gaining one of these the obvious counter. You would buy one of these, put your token on the Ruins pile, and then ideally trash-for-benefit it to get another card instead. It also irks me that the Ruins can't be evenly distributed for every player count. I do like the theme.