Quote from: LesLie_0300dbdd1b on Today at 06:15:54 PM

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I read the mail on the mailing list but there is one thing I haven't figured out. The idea of versioning, why do you think it is very important?

I saw the concerns here:

Quote

BIP39 seed phrases do not include a version number. This means that software should always know how to generate keys and addresses. BIP43 suggests that wallet software will try various existing derivation schemes within the BIP32 framework. This is extremely inefficient and rests on the assumption that future wallets will support all previously accepted derivation methods. If, in the future, a wallet developer decides not to implement a particular derivation method because it is deprecated, then the software will not be able to detect that the corresponding seed phrases are not supported, and it will return an empty wallet instead. This threatens users funds.

And I also saw gmaxwell commenting in 2017 that because of the lack of versioning he voted against using the BIP39.

Since I am not so experienced, could you number 2-3 possible shortcomings of not having a versioning system, apart from the one mentioned in the quoted text above?