There are just my own personal opinions...please treat them as such.
While I do feel that a person should do as good as they can with the camera, as I've often said - photography is a process...it's NOT just about what you do with the camera. The process begins before you even look thru the viewfinder by evaluating the subject and continues up to the final print (be it on photo paper, jpg or otherwise) and processing your images is VERY MUCH a part of that process. I still find some people's views about the use of image editing software to be rather mystifying...in the old days, even the ambitious hobbyist, let alone the avid enthusiast would setup his or her own darkroom to process their own images. No one questioned this and if anything, it was often expected. There were even retouching specialists would print a photo, air brush over any mistakes or imperfections and would then re-shoot the image...it was a VERY common practice that again no one ever really questioned. With the advent of digital imaging however, today people somehow see this same process as cheating, even though it's effectively the same thing. Dodging, burning, cropping, contrast, color correction and even more extreme image alterations...such things have LONG been part of the photographic process. It's not about "cheating", it's about the final print and taking control of your own work.
Since we're using a landscape as a reference here, consider the great Ansel Adams. Would you
really consider his work some kind of "cheat"? Yet Adams created many of the post processing techniques many of us use today on a daily basis...the difference is simply that today we use a computer instead of farting with those nasty chemicals while squinting for endless hours in a darkroom.
On that issue alone, while I would always suggest that a person strive to do as well as they can with the camera, don't discount the use of image editing software - it IS part of "the process".
Now since there was an open invite here, I did a quick and dirty edit to the first shot and have included the original for comparison...
I first opened the image in Adobe Camera RAW...even though it's jpeg, I felt the use of ACR would be faster and easier to bring out some of the shadows and color. In short, I brought up the fill light a fair degree, knocked down the Recover Highlights a bit, monkeyed with the exposure and brightness a little, bumped up the clarity, vibrance and saturation, etc.. I then opened the image in Photoshop (I'm using CS 5.0, not that it matters), fixed the crooked horizon, re-cropped the image and did some quick tweaks to levels, saturation and contrast (via layers). I also added just a bit of sharpening as well. Finally I added
just a hint of a vignette as an artistic choice to help "focus the eye" towards the center of the composition. Total time - about 3 minutes. Had I of been working with the original RAW image, I suspect I could have sucked even more detail out of the shadows, however even as a jpg, I think it made a fairly substantial difference for the minimal amount of effort I put into it.
Again I would reiterate here that your goal should be your final product...it's NOT strictly limited to what you do with the camera, nor should it be. It's about creating the best image you can and post processing SHOULD be a very large part of that.
Again just my own opinions...I hope they help!