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That's probably not the best example of module overrides. You're
right, you're much better off to fix your site and get it right rather
than band aiding it as I do in the example.
I worked on a project where we had some required modules that did
not live in sites/all or /profiles, and had to be in each
site-specific folder. It implemented some things with features and
also custom install and update hooks which set various settings and
configurations. It worked well for us in that case.
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