I'll have to consider your comments. But there is no detail in the upper portion to show. It is dense forest against a steep mountainside. Above the forest is open sky.
As for detail in dark glassy water, there just isn't any to be had. This panorama was a set of 6 (of the same scene) taken at different exposures so that I could try to do an HDR panorama. But the longer exposures do not show any more detail; the water is too dark, and the trees/sky just don't have any.
Personally, I think it works without any foreground detail. You may be right about cropping the right and losing 1/3 of the sky. I'll have to try it and see what I think. It would shift the composition away from the center and that would be good thing.
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Ok, I tried cropping the right and that works well. Cropping the top doesn't. It actually shifts the everything into center alignment. As it is, the primary focus is center down to the bottom power line. So it mostly works. cropping the top centers it along the horizon, not good. Cropping top and bottom just make it too narrow.
It will be interesting to see if anyone else has some feedback.