I hear good appendages!
The mood is sad, the use of silent moments is good, its minimalistic - all things that i like.
What i think is not so good is:
- the track ends very abrupt without some fadeout. I have read this in other reviews of your pieces already, that means nothing new to you.
- What i really think could boost the track on a higher level is the integration of a midsection with more movement and maybe some drums / smooth bass-synths. I think it could create more variety and improve the feeling of sadnes when you get back to the solopiano, that will sound much more lonely / sad then before the end and will improve the sad feeling you have after listening.
I think if you work the piece over a little bit it can become a good one. Hope the review was helpful to you. Just keep goin on :D