Because of changes in new anaconda  and after short discussion
Chris Lumens, I propose to remove this beta criterion :
'The rescue mode of the installer must be able to detect and mount
(read-write and read-only) LVM, encrypted, and RAID (BIOS, hardware, and
Reason (according to Chris): There's been no work done on rescue mode
and it is highly unlikely that it does anything at all right now.
Please, if you have some suggestions or notes reply to this thread. If
there won't be any objections I'll make changes during next week.
You can leave the rescue mode criterion in for alpha, beta, and final.
I did some work on it yesterday and it turned out to be pretty easy.