Of course, there are these irritating, smug know-it-alls who think they
are Connoisseurs: "You can take your Furtwanglers - you haven't really
heard the Bruckner 8th until you've savored the unique insights of
Maestro Amleto Toscali and the All-Union Mongolian Orchestra - finally
tracked down a copy in a thrift shop in Addis-Ababa..."
But enough about me.
Schnabel said it best - many works are better than they can be performed
- and I believe a quest for a superior performance is well worthwhile.
And you are right - there are a great many very fine performances of
mainstream works readily available, and there is only a small chance
that we can find something better.
But just today Mandryka brought up Valery Afanassiev - I greatly enjoyed
his Schubert B-flat major - a performance unlike any other:
https://www.youtube.com/watch?v=M1oNW4SnGWQ
And for Tchaikovsky, Nikolai Golovanov's Pathétique is unique:
https://www.youtube.com/watch?v=UwOI5NOltA8
I'm hoping that you are not proposing that RMCR be dissolved - maybe
like the fabled "Society for Placing Things on Top of Other Things" it
is just very silly??
(Oh - about Maestro Abravanel - I have many of his recordings - like
many conductors he was always competent and sometimes inspired. I enjoy
his Tchaikovsky ballet suites - and his Goldmark Rustic Wedding is great
- not that there is much competition)