Sometimes I fancy myself a designer
Google's Floating Action Button and they way it's forced upon 5.0+ users has left quite a few people unhappy, having to reach all the way top/right for message actions... and there are only two icons (on most devices) which can fit there, at least in portrait.
So I've decided to fill this gap.
mike, thanks for posting, I will now make a new topic 1) with the link and 2) mark it sticky