cryptodisk enabled returns to rescue prompt

[westlake]

enabling GRUB_ENABLE_CRYPTODISK=y has crypt prompting only once on 
bootup, is it possible to have an option with grub-install or another 
option here with GRUB_EMABLE_CRYPTODISK so that the keypass prompts in a 
loop? (a wrong passphrase typed brings the user to a grub rescue shell 
and has to issue ctl-alt-delete which is imho not very presentable to 
staff) -- I understand this is all in mbr bootcode so I suppose the best 
place to implement this would be when first generating the code in order 
to keep it small.

it would be imho really great if this can be implemented
thanks