No workaround, I’m afraid, in my experience at least.
Just finished to engrave the second new work with Dorico, and both absolutely needed cue notes.
I made them with the technique that fratveno suggests, but the smaller headnote size is not so small and rests and dynamics don’t help.
The pieces were kind of quite complex contemporary music, with not so much time to rehearse.
In short, players complained in both of cases; the cue notation was not clear for them and confused.
I really hope will be the next ‘big thing’ Dorico’s team will address after the 1.1.