Colin, the problem is the eye and brain combination is stunningly good at extracting information from and homing in on interesting parts of a scene and ignoring other parts. It is also good at moving about when viewing a landscape to concentrate on relatively small areas and often we don't notice it happening. What we see is a great looking view.
Unfortunately the camera cannot do this.
When using a wide angle, to make sure all of a huge landscape is included, it is very easy to end up with a photo with a very small image of distance mountains (which looked fantastic at the time) and a huge amount of empty foreground (which has been largely ignored by the brain); I have done this many times.
Look for foreground interest and lines to lead the eye into the view and towards the focal point. While wide angle lenses are possibly used for landscapes more than other lenses, longer focal lengths should not be ignored to pick out an interesting image. An hour or so before sunrise and sunset can provide excellent light and while the sunrise or set can give good photos, shots taken at 90 degrees either side of the sun can give some great shadows.
Dave