Thanks for the positive feedback! :)
I've actually gone and made a few more tweaks to the build. I added a single Half-arch to give the ruins a little bit more internal volume, to evoke the feeling of a proper structure.
Since part of the MOC's purpose is to showcase set 6235, I rebuilt the area a little, with tiles and some edges, so that the set just slots into the recess, and is easy to remove and show off. :)
I also wasn't entirely happy with the corner panel, so I built it up a little, the one somewhat 'intact' section of the entire fort/outpost. Also added a support for the balcony, so it's not just hanging over the cliff. And yes I know the torch isn't quite "period accurate", but I thought it looked good. :)
And lastly, I smoothed out the vertical edge of one of the wall sections, to evoke a feeling of erosion/crumbling. :)