A message to all BIP39-based wallet providers (to include signing devices):

Please make it easy for users to bring their own seed words. I'm referring to assisting a user who has generated their own seed words manually to land on a final checksum valid word.

Ideally, a user should be able to generate their own seed phrase offline with indifference to a checksum. Then, when a wallet they try to enter it into for the first time detects an invalid checksum, the wallet could offer to provide the associated checksum-valid final word; so that the user may update their own physical backup and reenter their entire seed phrase for checksum verification.

I realize some wallets already offer some version of this "generate final word" assistance. It really seems like this should be expected as a standard now for all wallets.

Also, might be best to start encouraging users to be generating their own seed words rather than relying on a wallet to tell them what their seed words will be.

PS. Thank you! Your work is greatly appreciated, and probably doesn't get the full recognition that it deserves.