4/5. Newer tried macros. Maybe I should get into that… But why not make it a tool?!
4 already is, 5 can be done in a macro easily.
6. I have made two track with a drum loop. I group them, then I open one of them in audio editor and move using free warp. You can see the two tracks do not follow each other in the project window (see screen dump ): https://dl.dropboxusercontent.com/u/2425732/Cubase_Grouping_Warp.png
Am I missing something?!
AHHH, no I was missing something from your original explanation. Grouping the way you have it only applies to the arrange page. What you want to do is make a folder, move the files to the folder and enable group editing on the folder. Then it will behave closer to how you want. You need to read up on group editing though, it has its own little peculiarities that take a bit of getting used to.