You seem to like colour imbalance! It can work, perhaps when they are both unrealistic (as I found with "new lightroom/photoshop" in "oh the frustration"), but more frequently it does not.
Good luck - keep shooting & sharing - and, for a while, try ditching the colour grad filter.
I agree. I LOVED the 'oh the frustration' image, but am less fond of these. Like you mention, there is a lot more going on, leaving a lot less empty space, and where there is some empty space (the water), it doesn't aid the image. To me, this leaves the foreground and background a little too separated. It looks like you saw the great sunset, and then went looking for something to place in the foreground (?) but I think the sunset (colour aside) almost detracts from the composition by adding a lot of structure to the lop of the image.
I think oliver03 would have looked great without the background, pebbles in the foreground, leading out to a beautiful sunset in the distance.
All only my opinion of course, and thanks for sharing!