Mr Red. The unexpected call is part of the game in modern American squares.
"two ladies ch...change your minds"
I see your point about beginners, they wouldn't be dancing that kind of square without a series of lessons.

At clubs that dance a mix and have a mix of abilities it's not something I've thought about, but maybe if callers should give a warning 'this dance is unusual because ...' I wouldn't stop calling Bucksaw Reel aka Becket Reel , but I usually warn people to squeeze their partners L hand after the R&L through, to remind each other that the stars are L then R (for a good reason, as it flows into the next turn)