You are asking me to invest a lot of time for a very trivial
set of changes.

I find the proposed six update steps also trivial so far.

Why don't you just integrate the feedback you were given and
resubmit your patch series, just like any other developer would?

I find the requested redesign and reorganisation of involved data structures
not so easy and therefore more challenging at the moment.
Where should "the error pointers" be stored instead?
Is such a software improvement even a kind of add-on to my patch series?

Regards,
Markus