Hi cyber7,
for the network issues we count to solve most of them with the next release, we already rewrote entire parts of the code (thanks to hondagx35). Here you can follow the progress on the "dev" branch:
https://github.com/RuneAudio/RuneUI/tree/dev
You can also help us to test it before the official release if you want.
For the radio stations, we should build a batch importer which will work in the same way as the existing single radio station add (so passing via Redis database). Could you contribute to its development?
The dev mode button is planned to be fixed for 0.4 (or it's already fixed, I don't remember now

).
Btw the quickest way to enable the dev mode is to write:
redis-cli set dev "1"
For custom scripts and extensions, we are going to consider it for the next releases (starting from 0.5) as we are about to revolutionize the backend.