I have searched and did not find a feature request similar to mine.
Expected behavior of the wanted feature
script-message osc-playlist is too close to the top of the window, so osd-playing-msg gets hidden by it . Is there a way to move osc-playlist a bit lower?
Since i'm not sure what "a bit lower actually is, a possibility is to move it at middle-left (instead of top-left) of the window?

Having OSC visibility (ie. when playing an audio only file): always is also problematic as the pseudo-"window title" is on top of the playlist.

Log file
In this case, i believe the log is not needed.
mpv.net conf
input-default-bindings = no
input-ar-delay = 500
input-ar-rate = 20
keep-open-pause = no
script-opts = osc-scalewindowed=1.5
screenshot-directory = '~~desktop/'
cscale = spline36
dscale = spline36
scale = spline36
hwdec = yes
# Editor
slang = 'en'
sub-auto = all
save-position-on-quit = yes
border = no
# osd
osd-duration=3000
osd-on-seek=msg-bar
# osd-level=3 # don't want this
osd-playing-msg = '${filename} - ${media-title}'
[protocol.https]
osd-playing-msg = '${media-title}'