Thanks all for the detailed responses, learnt a lot from your valuable inputs.
Full camera setting: canon 6D.
1/125, 70mm, f14 (AV), iso 100. Lens was 24-70 f2.8 II. Auto Focus.
I applied some de-haze, clarity, sharpening, and shake reduction (as well as warming up the tone just a tad) but it only reinforces my initial impression that the image was not quite fully captured. Did you focus on the sail boat?
The plane/helicopter/blimp/whatever-in-the-sky is suffering from motion blur IMO.
Used aperture priority and chose f/14 to focus on far off buildings so 1/125 was chosen automatically.
It was on auto focus. Some i shot with buildings in focus and some with sailboat - with the idea that it would be the subject. Not sure which i focussed on in this image.
The blurry thing is a bird

Was trying to get that into the frame, but the F14 gave 1/125 and blurred that.
How do you apply the de-haze? It it only in photoshop or can LR6 (not CC) also do de-hazing? From what I read, a combination of settings may get some the effect of a the de-haze slider.
@Peeb 's edit above emphasizes the previous comments. Another thing to be aware of is that large cities seem to have a haze over them (smog) and can appear flat in bright sun. Depending on the angle of the sun, a polarizing filter will help to eliminate the haze and increase the saturation of the colors.
Understanding & Using Polarizing Filters
Another thing, is the f/stop you're using. My opinion is in sunlight, you'd be far better off to stop down to f/8 and adjust the exposure with a higher shutter speed, which would still give you ample DOF. Not sure of the distance here, but for example if you assume the near sailboat is 1500', at f/8 your near limit for DOF would be just over 1400 feet, but your far limit would be to infinity, so you'd have a sufficient DOF for everything.
Thanks, will look into these calculations. Will try this shot again with different times of the day/season. Was also a pretty hot day, wonder if the air would be more turbulent than a cooler day or in the morning times.
@Ysarex : Thanks for your comments too. I started paying attention to weather forecast for astronomy, dint realize it affects landscape photography too.
So much of finer details to be learnt when you feel you are close to sharp pictures, but its still far away... something like getting to scratch golf!