I honestly didn't even notice the distant vegetation was just procedural. I just wondering why the flows colouring wasn't present in foreground populations. That might look nice, I think I've done this before without any issues (from classic erosion).
This is a nice scene, the only thing that really bugs me is the lines fromt he strata shader. Erosion is kinda difficult to balance with strata though without most of it being hidden except the sharp edges which erosion seems to almost ignore for the most part. You may have better luck using the sinus function I recently shared for a smoother edge for erosion to effect.