As soon as I'm done listening to my Rachmaninoff again...and listening to all my mistakes...again.... *sigh*
But I reserve the first reply.
(I'm replying as I listen...)
I don't like the roll at the end of the second phrase/line...right at the beginning. It breaks up the 'military' sense to the polonaise. Military = formality/rigidness. They would never let you get away with such a phrasing. (Trust me.)
Really bring out the dynamic changes. (You may already, and it may be the recording...I always allow for that, because my own ability to record is...well...non-existant.) What's loud is LOUD, what's soft is soft
...but you blend them a bit, so everything goes to the middle. I'm not saying make the dynamics go to the extremes, but do try to differentiate a bit more.
Evenness right before the last section (right before the repeat) on the ascending notes to the top. Same in the last section...right before the repeat.
I think, over all, I liked this better than the Beethoven.
You definitely played it like you knew what you were doing, with only a few minor spots (most of which, I think I pointed out above).
Got any more?