The direction of the light in the scene is well less than flattering, and what looks like the backs of the houses in the scene make for a rather uninteresting background.
Most of the houses are in shadow as is most of the right side of the still water above the dam that could have had a nice reflection of the houses behind that part of the still water if the light direction could have been better.
If your camera has a feature like Nikon's Active D-Lighting, the dynamic range between the bright and dark portions of the photos you stitched together could have been reduced.
A higher camera perspective, like being several steps up on a 6' step ladder, would have allowed for more reflection in the still water.
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