I agree! The time has come and Google has to Force Developers to Follow Android Guidelines, because this will force, clients that externalize mobile apps, to create pure Android Apps.
I’ve been working a few years as consultant for mobile apps and what I could say is that clients don’t understand why they have to invest in redesign the iOS UI and UX. The client, most of times just want to say: “I have an Android app, see how cool I am”.
Actually some clients don’t care about Android. They just buy the cheapest android app development (usually this cheap solution just port iOS version with phonegap or similar). if I have to be frank make a pure Android app is not easy, not fast, not cheaper than port an iOS version.
Unfortunately, Google is not going to change Play Store the publish requirements. Play Store has an increased number of malware, spyware, spam apps and the only change they made was to remove the new apps section in the Store, so don’t wait for it.