It has been a long time since the last time I checked this forum, maybe 3 months ago, and then I see this interesting question.
As for me, I'm just waiting the API be consolidated before start building things. I have a lot of ideas but it's just not the right moment to build anything now (at least for me).
The logic of how a safe app is built is under heavy change. For example, if I want to write a tutorial on how to write safe apps, I know that in 2 or 3 months the API design, and thus the logic, will be completely different from now, and everything will be obsolete. So it's not worthwhile, I need to wait.
For me, as a developer, it doesn't matter if the network is unstable, it loses data, it has connectivity problems, it crashes, it's insecure, that it emulates behaviors instead of actually implements it, etc. But it's crucial to have a consolidated API. With a consolidated API, I can start to think, I can start to project safe apps while the network is actually being developed.
I think that when the safe team starts to build applications by themselves, they will identify things to add/change in the API design and improve it - before this happens, the API will still be very immature.
I believe that the API will be consolidated somewhere between mid-2018 and mid-2019. I'll be very happy if it happens before, but I'll not be frustrated if it took all this time to have a solid API. Until there, I'll be checking this forum from time to time to see how things are going.
So, keep up with the good work safe team. I'll be here when you are ready.