I also like the reflections. I think it might be a bit underexposed. You might bump that up a bit and also increase the saturation a bit...especially blue. That might make it pop.
I agree that it lacks a center of interest. It grabs you with the reflection but doesn't really keep you or draw you in. That is probably what is playing with your brain.
While the reflections are cool, they are blurry as the water is moving ever-so-slightly, which detracts a bit. The horizon cuts the composition in half and there isn't anything noteworthy on the horizon to pull you in. If the reflections were clear, the image would be symetrical, which in and of itself would make for a great center of interest and make up for the lack of interest on the horizon.
While I don't see an issue here, I would recommend using a smaller aperture for landscapes...say f/8 to f/13. It will increase your DOF and possibly also increase image quality as most lenses are not as sharp at f/4 or wider. Just my two-cents...not a law or anything.