SYSML2_ — Issues with SysML/KerML grammar

I raised a number of issues previously with regards to detailed/specific problems with the KerML textual syntax grammar.
A more general issue is that I find the grammar (as written) hard to digest.
It is not modular, and the chapters don't seem to relate fully to the Abstract Syntax packages.

I have created an alternative grammar, using a different grammar-syntax, that allows for modular definition of grammars.
I would like to offer you this.
However, I cannot attach files to this issue!
feel free to contact me if you would like me to provide them.

In summary, one can modularise the KerML grammar into a Kernel, Core, Root (groups/packages)
with each group/package containing 3-5 grammar modules and extension relationships to combine them.

I plan to do the same for the full SysML grammar (later).