What's the purpose of line numbers in the left pane of miller view? (They aren't shown in the right pane, by the way.)
If you have 'relativenumber' on as well, you'll be able to pass the number to :[count]siblnext and :[count]siblprev commands to quickly navigate to a sibling directory.
'relativenumber'
:[count]siblnext
:[count]siblprev
Thanks a lot! I think I will map them to J and K.