I designed some new modes of operations, which are all based on PCBC mode. They are storage media modes, i.e. disk encryption modes, and should not be used in other contexts, i.e., to encrypt traffic for example.
I made them because I am interested in designing a storage media mode which could easily hide large regions of highly redundant data together with high resistance to attempts to see data shapes through difference between (two) storage media images.
I just post them for review, if anyone is interested.