The guideline on classical release titles says:

"A list of works by different composers: For every work, add the composer as credited. Separate the composer from the work with a colon."

I suggest the following two changes:

• Add a rule, saying that if the list of works contains a continuous sequence of works with the same composer credit, the composer should only be added to the first work in that sequence.

In this this example, the current form of the guidelines would dictate the title
"Bedřich Smetana: Die Moldau / Bedřich Smetana: Vyšehrad / Bedřich Smetana: Aus Böhmens Hain und Flur / Antonín Dvořák: Slawische Tänze op. 46"

With the suggested change, the title would be the more compact (and less redundant):
"Bedřich Smetana: Die Moldau / Vyšehrad / Aus Böhmens Hain und Flur / Antonín Dvořák: Slawische Tänze op. 46"

• Instead of "add the composer", write "add the composer(s)", to cover cases like this, where works are listed with more than one credited composer.

Also, it might be helpful to add these two cases to the examples of the guideline.