Maybe one way to get dancers more comfortable with dips,seducers etc. is to teach leans more often? Not sure how many lean-type moves there are (I only know two), but it does get people more used to the higher levels of trust, coordination and spatial awareness required for dips, compared to other moves.
Maybe some teachers (not the ones I know!
) are too keen on inventing lots of fantastic variations on dips and seducers, without remembering that others need to travel the learning curve to be able to do them too!