DWN make me read your RFC about LPPL.
I had been involved in a translation effort to make LaTeX base classes
accessible for French users. We then translated many *.dtx files.
Of course we only translated comments and never changed source code,
but they are merged in a single file.
AFAICT this is forbidden by the LPPL, since we did not rename classes
(which would not make sense).
So I would much appreciate if the new license would allow translating
LaTeX classes.
If I am not clear, please let me know and I will explain again what the
problem is.