It seems to me that there are two problems with ornaments: technical and visual. The technical aspect is not just that students can't get their fingers around ornaments on the piano

The best way to improve your sight-reading at the piano is to play a lot more music, and have a teacher guide you about what you are doing right, and what you are doing wrong. But there are lots of books on the market that can help.

What is to be done with Debussy's Le Petit Negre? It is a good piece, but it is unusable with its current title.

Old editions have their uses. The old Novello edition of Chopin Nocturnes has a very helpful table of the fioriture (fast florid passages) in the Chopin Nocturnes, with an interpretation by Frank Merrick of how to play them.