We are also pushing (internally) to have the 4 data types (register, chunk, transaction and account packet) completed and documented properly immediately. It should be a quick win and give devs and actual documented API to code to.
I think some mini apps will be great and help test the network properly in all its forms. So I am super keen on getting that small part of work done and made critical right now. I feel very strongly that the client API is not where it should be and I agree with @happybeing that it’s essential for launch and not tomorrow, but yesterday. So I am pushing hard for this as I see everything else as secondary.