This is one of my favorite projects to follow on the forums.
It blows my mind what you're able to do with C2!
You're doing such a fantastic job with your lighting, and I think if you pushed it a bit further it would really make your game "pop."
If you look at a game like Diablo 2 (I know it's old and isometric, but stick with me here...) they put a lot of contrast in their light and dark areas, and that really helped the game to not feel "flat."
Right now a lot of the materials in your screenshots blend together, and sometimes it can be hard to distinguish where one material begins and another begins (tree leaves to grass, and rock wall to roof shingles are two examples).
When stuff blends together like that it starts to feel a little flat. You have a great color palette though and I think if you just darkened those shadows quite a bit it would add some great outlines and really make the game sing visually!
Not offended if you don't listen to me though, your game looks fantastic as is.