Lift M3UA improvements into SUA

Hello folks,

SUA RFC lacks a lot of details, especially if compared with M3UA RFC.
Many statements from M3UA RFC do apply to SUA as well. For instance,
explanations of n+k redundancy, SE and DE modes, and many more.

Is there any intention to lift those improvements made in M3UAbis into
the SUA spec?

As far as understand there is no standardization body except for IETF
that accepted SUA, is there?

Is that the actual reason that SUA does not evolve to an open protocol
that provide for interoperability?

Thank you in advance

-- 
Ilie