I spent a long time trying (and failing) to make sense of the Bottesini elegy. But finally, I figured out how to make it work for me. It's still in need of some polish, but I'm finally at the point where I can use it as an expressive vehicle rather than simply a challenge to be met.
My goals for this year are to work to the point where I could take a sub audition for a minor professional orchestra, and to maybe play a small recital. To the first point, I've pulled out a few excerpts that I've never worked on before (Mozart, Strauss) and started in on the first page of the Bottesini concerto.
When I left for Christmas vacation, I made a recording of the elegy - with plenty of flaws (some wobbly intonation and harmonics that didn't speak, plus at the very end I flubbed some notes). With some hesitation, I present it here. Obviously it's not great, but it's a big step for me, and I think the problems that are left there are entirely fixable with a little time and attention. Also, the piano is coming from a canned YouTube video, so it would be easier to work some of those things with a Real Human Being.