It's a nice variant system, but I think given the vast scope of the Imperium,
the standard protocol would be quite as existant. Certainly, the Imperial
ships and systems would be closest to the standard, but individual worlds/
governments, no matter how close, would probably have their own standard,
and interpreter protocols would be developed from that.
The reason would be much the same for the disparity in Tech levels across
the Imperium. Imagine a TL8 world in Massilia Sector. Not nearly as far from
Cor as Spinward Marches. Let's assume this world has a united global
government and a single global computer network (which is a lot to assume).
Th Imperium comes by, and says, "we have this standard". Well, I doubt the
Imperium would make the standard completely compatible with lower tech
systems; it couldn't be done without sacrificing some details. And upgrading
an entire planet's computer network would costly and time-consuming.
I'm sure it's possible, but it's be a lot more complicated than you might think.
J Roberson