I am really happy with C13. C12 was my 1st version since Cubase 0.9 some 30 odd years ago .
There are now just 2 things I am missing now . that would really help work flow
Folders that follow the Arrange window in the Mixer ,
I would not remove anything thats there now .
just add 2 options ,
1, VCA style folder (any tracks placed inside would have an overall VCA style volume control )
2, Summing Folder (any tracks placed inside would get its audio output bussed via the folders out) like a group.
A VSTi window which could stay open and follow track section .