So that's how visitor gets all his posts- he puts each repertoire recommendation in a separate post

Anyways, here are some pieces to improve fingerwork.
Schubert Impropmptus Op 90, any of them work.
Chopin Etude 10/11 (might not be what you're looking for, but a good piece to mess around with if nothing else)
For the LH, Chopin etude Op 10/9 (useful in ballades, with the flowing accompaniments that this etude works on specifically)
Any sonatas by Mozart or Scarlatti.