Control: tags -1 wontfix Control: close -1 udebs are a huge amount of work for everyone involved, especially the already overworked D-I team, so I am not going to add new ones.
Any additional unlock method can simply be added later, it's fine to create the volume with a passphrase first, and in fact there should always be one as a backup. Other methods can be enrolled either in the installer itself, after the rootfs has been installed and using the packages and tools from /target, or after first boot. There is no need to further complicate the D-I image builds with more udebs.

