Requesting ~arch keywords: Is a maintainer able to request ~arch 
keywords, if the package is not a dependency of some other package which 
is keyworded, and the maintainer doesn't have that arch?

IMHO the packages should be keyworded if an arch team member or an user 
of that arch requests it. Keywording something if an user of said arch 
doesn't request it, is a waste of resources.
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