Hi Justine,
I'm not sure if this constitutes a suggestion, or merely a comment. Regarding the first point (on 1.2.2.6 and 1.2.2.7).
Allocatable variants are those which are used interchangeably (to at least some extent, and in some languages using the script). For the Latin script, there are no more than 2. The reason for that being that the Latin Generation Panel had speakers of maybe a half dozen of the hundreds of languages which use that script. Meaning that it was impossible to know what characters were used interchangeably in one or another of those languages. So there are, potentially, a very large number of cases (and for certain several known ones) which should be allocatable variants, but are not so identified.
I'm not sure how, or whether, the next round proposes to address this shortcoming. And the Applicant Guidebook may not be the right place to do something about it. But I persist in noting the elephant in the room.
Bill Jouris