for #2 it’s working as expected for me, only selected notes are dark (black with note color outline), disabled track are dim (based on preferences value for how dim you want them), but not black, so very clear what track i am working on and what notes are selected, of course you need to part editing mode to be set to active part rather than all parts, but that was the case in C14 as well.
Unless i am misunderstanding..
