Thanks for listening so carefully. Glad you enjoyed it, in spite of its flaws.
About the space, I see what you mean, yet I did use some reverbs (short, medium and long depending on the intruments and how I wanted to place them in the mix), but I did not want to add more as it was becoming harder and harder to mix with added reverb. So I went for compromise. Enough space so that it didn't feel too confined, and little enough to keep clarity in the mix, without having to EQ the instruments too heavily and keep their full "natural" sound. I may have failed that, but orchestral music is not my main style of composition, even though I enjoy doing that a lot, so the good news is: I have room for improvement for future pieces!
I can't remember which reverb(s) I used for this project, I have several, from Fabfilter (Pro-R), Native Instruments (RC24 and RC 48), and a bunch of others, including the reverbs provided with the Vienna instruments, which sound great but I rarely use them because I haven't yet taken the time to really experiment with them.