Starting on some major works and some minor works

[invictus]

Ok, my last few pieces were

Debussy - Passpied (remastered), Childrens Corner (whole set)
Rachmaninoff - Preludes 5, 10, flight of the bumble bee
Prok - Suggestion Diabolique (rough)[gonna remaster sooner, was a tad too difficult]

What else should I do next?

Perhaps some Chopin Ballades?
I want to do some major works. What else should I do? Preferably 20th century, or very late romantic.