Hmm I see two or three Team Rocket stops every time I go out but I do cover a lot of ground. I have only fought twice and they were both extremely difficult to the point where they weren't that much fun though the new super move things were cool. I don't get the purifying mechanic. I was allowed to try and catch a Zubat but they only gave me 3 balls to do it and as you said, they are already very difficult to catch without them being super-powered. I'm fine with the speed limit on not being able to spin PokeStops or not getting spawns because whatever speed that is is sufficiently high that I never hit it on a bike. 6.5 mph is stupid slow though for leveling and eggs and they need to raise it or do something else to scale bicycling difficulty. It's just much too low.