Not sure if you are still looking at options here... I had a look at the screenshots in your first post. The grass and tree textures seem to be sharp, and that's probably the reason why the image doesn't look fetching in this particular lighting. Try turning on Depth of Field and you should have a pretty decent image. Like others have said, explore other areas at different times and you should see it's really pretty nice. Edit: You could also try other presets like Vividian, NLA, etc. and decide which one personally suits you best.
