Can't really see the terrain, to be honest, so it's impossible to make a good judgement. Folks got distracted by the rain (which does look good) but if you want an honest assessment of the terrain itself we'd need to actually see it.

Hm I don't think anything of the terrain because I cannot see it :) Nice rain effect though (on the image, dunno how it looks on a video).

Remove the rain and post another screenshot, if you want to hear feedback about the terrain. ;)

Here you go, it finally stopped raining:

[attachment=17250:nr.png]

Maybe even some fire:

[attachment=17251:fire.png]

That actually didn't help that much. Try a little bit more of sunlight ;)

Yeah, it's a bit dark.

On what basis are we being asked to critique this? Is it the overall aesthetic? If that's the case, it needs more stuff. Real terrain isn't that bare and slick, barring empty and bare terrain like rolling dunes.

Are we being asked to critique it on technical merits? If that's the case, we really can't see the detail on the terrain so we don't know if there are problems with your texture splatting and detail mapping.

@FLeBlanc: It's supposed to be dark because of the scene environment.

Here is another scene:

[attachment=17328:41854984.png]

And here is a screenshot (without rain and with point light):

[attachment=17329:5951485.png]

8 Lights per mesh, I'm planning to render the mesh multiple times if it need more lights than the maximum.