There have been various arguments about how Android should be developed in the long run, both in terms of functionality as well as aesthetics. The changes that were introduced to the OS over the recent months/years and the advances in Material Design have made it a great choice for many users, but there are arguments that it still lacks in some regards.
Google seem confident in their ability to get the OS on the right track though, and they are definitely highly successful in many ways, especially when it comes to implementing features that their users have specifically asked for. They know how to listen to feedback and this is one of the features that have given them success to a great level.
But on the other hand, the company also seems to have their own idea about how Android should be developed, and they sometimes disregard what their fans are saying in favor of their own opinion.
There is nothing wrong with that, but hopefully we are not going to see Android moving in a strange direction eventually, one that takes it away from what people liked about the OS in the first place. On the other hand, Google must also be careful with how they are organizing the updates for the system, as this has commonly been a source of complaints for their users.