During the recovery card stage of initialization I wish there was an option for "card splitting" using Shamir's Secret Sharing. I could write down the seeds on 3 cards knowing that at least 2 have to be combined for a restoration of funds or even the option to pick how it's split. It would be useful for giving the cards to family for safe keeping. It also would be more secure as you could lock up the cards in different locations.
How I did it:
CARD A: words 1-16
CARD B: words 9-24
CARD C: words 1-8 + 17-24
you can add some dummy words to get 24 words on the card and make it look like a full seed if you are paranoid
cool scheme, but not as good as sss (sharmirs secret sharing), which gives no information at all with < n pieces. With your scheme each card gives me part of the seed: I only need to bruteforce 8 words if I have one card.