I keep imagining a portrait shot with a little more height to show more of the tapering of the structure and more of the mast/aerial on the left. Also I would try to see what effect reducing highlights would have. It's a good idea though, and just as you suggest not your typical lighthouse pose.
Now all I need is to find me a lighthouse to try it out on.... tee hee. Ok where is it then?
I really like this - especially the colours in it