How far can the LO file's contents be stretched?

The native file format of LO files is simply a ZIP archive with various
types of files in it.

I intend to do some gymnastics with the ZIP files and the XML in them,
and I would like to know how far it can be stretched ;) In particular, I
want to explode the archive into git tree, mangle its contents in
various ways, and then generate an ODF file from the tree using git-archive.

Specifically:

1. Is the order of the files in the ZIP archive important? For example,
unzip -l lists the following:

       39  02-02-2012 21:28   mimetype
...
      899  02-02-2012 21:28   manifest.rdf
...
     6699  02-02-2012 21:28   Object 44/settings.xml
      457  02-02-2012 21:28   Object 44/content.xml
   711200  02-02-2012 21:28   styles.xml
...
      155  02-02-2012 21:28   Pictures/100000000000000B0000000E248D8E65.png
...
      402  02-02-2012 21:28   ObjectReplacements/Object 44
...
     2572  02-02-2012 21:28   Thumbnails/thumbnail.png
...
     1347  02-02-2012 21:28   meta.xml
    23040  02-02-2012 21:28   Object 6
  3094362  02-02-2012 21:28   content.xml
    10636  02-02-2012 21:28   settings.xml
...
    22302  02-02-2012 21:28   META-INF/manifest.xml

When I package the resulting git tree with git-archive, it will be
sorted by ASCII codes:

META-INF/manifest.xml
Object 44/content.xml
Object 44/settings.xml
Object 6
ObjectReplacements/Object 44
Pictures/100000000000000B0000000E248D8E65.png
Thumbnails/thumbnail.png
content.xml
manifest.rdf
meta.xml
mimetype
settings.xml
styles.xml

Will this be a problem?

2) Another side effect of the detour via git will be that empty folders
will be absent in the package resulting from git-archive:

        0  02-02-2012 21:28   Object 7/popupmenu/
     6698  02-02-2012 21:28   Object 7/settings.xml
        0  02-02-2012 21:28   Object 7/toolpanel/
      365  02-02-2012 21:28   Object 7/content.xml
        0  02-02-2012 21:28   Object 7/statusbar/
        0  02-02-2012 21:28   Object 7/progressbar/
        0  02-02-2012 21:28   Object 7/toolbar/
        0  02-02-2012 21:28   Object 7/floater/
        0  02-02-2012 21:28   Object 7/menubar/

will become

      365  02-02-2012 21:28   Object 7/content.xml
     6698  02-02-2012 21:28   Object 7/settings.xml

in the result. Again, is it a problem?

3) Can the styles listed in an <office:automatic-styles> section be
renamed? For example:

 <style:style style:name="P9" style:family="paragraph"
   style:parent-style-name="Standard">

would be renamed to

 <style:style style:name="Standard_8cc20b56" style:family="paragraph"
   style:parent-style-name="Standard">

(All references of "P4" in <office:body> and elsewhere would be renamed
accordingly, of course.)

Thanks for your response,
-- Hannes