Awesome, thanks for the reply!
Right now I’m using the graphql API to work only at the apps level and it’s been working pretty well. Is that something I should plan to change sooner than later? It sounds like machines will be the only officially supported API.
For billing, I have absolutely no problem with paying for IPs, in fact I’m glad that they’re not free because that seemed like people were always going to abuse that. Though I do appreciate the advanced warning 
My real concern would be if something functionality-wise were to change out from under me without warning and break something. Particularly around the anycast IPs because at the moment Fly is pretty unique with the way you offer those and I couldn’t easily get that somewhere else. If you decided to stop offering that (say, went with shared IPs for all) I suspect a bunch of people would be scrambling pretty hard. Which is why I reacted more strongly when I woke up yesterday to this immediate change.