The future maintenance of the proposed standard could possibly be easier if it was divided into multi-part standard.
Divide standard to multi-part standard
All documents
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Proposed Disposition of DIS 29500 Comment FI-0003 (Modified: 2007-12-27) Agreed. DIS 29500 has two parts that lend themselves to use by other standards: Part 2 (Open Packaging Conventions) and Part 5 (Markup Compatibility and Extensibility). In order to allow for normative references to those parts from other standards, we will make DIS 29500 a multi-part standard, as described below. DIS 29500 will be restructured to consist of the following three parts: DIS 29500-1, which contains the existing Part 1 (Fundamentals), Part 4 (Markup Language Reference), and Part 3 (Primer), the latter being moved to an informative annex. (Note: the disposition for comment JP-0030 moves deprecated features [such as VML] from within these three parts to a new annex of DIS 29500-1.) DIS 29500-2, which contains the existing Part 2 (Open Packaging Convention). DIS 29500-3, which contains the existing Part 5 (Markup Compatibility and Extensibility). The conformance clause for each of these three parts will be structured as follows: DIS 29500-1 will have a variation of the existing conformance clause in Part 1, with the concept of conformance classes introduced, and defined for each of the document types: WordprocessingML, SpreadsheetML, and PresentationML. (See the disposition for comments JP-0027, JP-0028, and JP-0029.) DIS 29500-2 will use the existing conformance clause in Part 2. DIS 29500-3 will use a new conformance clause. (See the disposition for comment JP-0080.) Similar Comments: AU-0005 , CL-0039 , CZ-0002 , DE-0120 , DK-0059 , DK-0060 , DK-0061 , DK-0062 , DK-0063 , ECMA-0037 , IN- 0052 , IN-0054 , JP-0039 , JP-0079 , KE-0003 , NO-0002 , NO-0007 , PT-0008 , PT-0033 , US-0021 , US-0253 , ZA-0006

Unsolvable within the limitations of the ballot resolution. Splitting the standard could only be achieved in future.
yup, that makes it a wreaking amendment
It is enough to decide on the disposition of the comments, then it can be carried out by the project editor who finalizes the text. It is no wrecking amendment but a reasonable proposal that just lacks some details.