You could certainly do something, but I don’t know that any work-around would be worth the trouble. Certainly it will be nice when the playback is automatic.
You could create an additional player that does nothing but play the turn notes.
It might be possible to put the turn notes in a second voice and then hide the notes. I’m not sure about that one.
I wonder if it might make sense at some point to be able to add notes in PLAY mode, when those notes are not explicitly in the score. There might be other cases where that would be useful/