Not really much. Only some small changes. I can only say something for you 3rd question.
You should have a script, where you PRAGMA_BIND everything you use in your project, because 3DGS does not always detect, what you use so it may forget some stuff in your publish directory.
Happened to me also a lot.
I just created a script which reads through all folders in my project directory and writes a header file with all PRAGMA_BINDS.
If you want i can share it, but you have to clean you project folder, because it will also add .wmp and .$$M files.
So in the end you may have a lot of unnecessary files in you publish folder, which just makes it take more space than necessary.