I didn’t think “Surname, First name” would be that common. It’s not much of a problem with Richter because he’s quite well known, but if this is done with less-known performers it could get confusing fast.
I would be very tempted to just enter it as “First name Surname” anyway if it were a one-off release, but if all releases by this label follow this format, not so much.
Some options, plus my thoughts on them:
Schumann; Richter, Sviatoslav, Surname, First Name (what we do now, but confusing)
Schumann; Sviatoslav Richter, First Name Surname (ignore the way it is displayed on the cover, in this context artist intent doesn’t apply anyway)
Schumann; Richter, Sviatoslav | Surname, First Name (keep the usual separator between composer and performers, change the confusing one to something else)
Schumann | Richter, Sviatoslav; Surname, First Name (change the comma with a semicolon, which is the normal practice when commas are confusing, but then you’ll also have to change the separator between composer and performers)
I don’t think we should change the standard way we list composers and performers just to accommodate this edge case (I just know somebody is going to suggest this ). It’s a huge amount of work and it will most likely produce new edge cases, wasting lots of time and effort for nothing.
I think the first option I listed is too confusing to be useful, and the fourth option would be too confusing compared to releases which follow the standard practice. I’m not sure about options two or three.
P.S. Both the release title and release artist don’t currently follow the CSG.