The last time I used Android (around 2011, in the Gingerbread days), there were a few home screen replacements that took heavy inspiration from WP7/8. They didn't fit in with the system as a whole, which was saying something considering how fragmented the UX was in Android (pre-Material) at the time.
Good software should be part of a cohesive whole and maintain the system UX whenever possible, not bring it's own paradigm that overrides it's host.
That said, I'd love it someone tried to revive the ideas behind SlideScreen[0]. Instead of a focus on surfacing apps, the home screen instead focuses on surfacing information (in more of a pull style vs push notifications) and letting the user go from there.
[0] http://slidescreenhome.com/
