I have had a few bikes and minibikes being deleted by the game but once it was launched 900 meters in the air and stuck there untill I flew up and sat on it.
As a SP player smarter zombies are what got me back to A17 as A16 became way to easy - they still need to be a lot smarter/random.
Also - what happened that all the zombies pour out of the POIs in b240 - it was great that you couldn't easily lure all of them out.
2614 hours since 2015 and patiently just waiting to put in a few hundred more when A17 hits.
I don't care that it takes long as good things are worth waiting for.
My only disapointment so far is that the Beheamoth is cut :(