Hey, thank you for your critique =). For the eyesockets, depth is really not a problem in 3D. I'll just pop the eyeballs in regardless of the depth. Unlike traditional clay, overlaps won't be a problem. Still, it's worthwhile to keep in mind and I might even push them further back than I'd may have done otherwise.
In regards to the other points you mentioned, I played around a bit with your suggestions and agree, that the bridge of the nose should probably toned down a bit. For some reason I just really like pushing the nose of my characters up to a breaking point :D. For the jaw area, I might push it a tiny bit more but I'll likely keep him on the more human side. One reason is that it'd probably be a lot of (re)work to make him into a fully fledged Orc. In that case it's likely faster to just start from scratch. The other reason is, that I envision him more like a brute, but still human. I do have some ideas that I am exited to share once I am done.
@marco_cprn97 Thank you so much!