Whilst I still do enjoy Pokemon Go, it's hold on me has been dropping lately. I do believe that Niantic should try and find ways to do real PvP (fighting other trainers) along with a total redesign of the combat system.
I'm fine with the spawns, but they could be improved in actual nature/outdoors. There are times when I've been in the mountains/forests and have no had a single Pokemon spawn. It would be great to see some of the more rare ones there.
RE: New Pokemon Go update incoming.