stunning view i have to say, made famous by Ansel Adams of course whose use of tonality and composition is the stuff of legend. that may be your biggest problem - its a known view and i doubt his could be bettered. have a look at his shots they are all over the interweb.
but taking what you have is all we can comment on because i dont know if its from a well known viewing platform or if you have to walk for miles to get a view.
the sky is blue and the air pretty clear and some nice clouds would have been a bit better. the one you do have near the half dome is a little blown out and if it were mine and i was hoping to print large, id be tempted to lose the clouds you do have and inport a few interesting ones from somewhere else. you may of course not agree or find that type of modification acceptable but i have no problem with helping what is there.
the bottom is a bit tightly cropped and it feels a little starved of foreground interest but the shapes of the mountains are nice and the waterfall adds a lot.
its a bit hazy down in the valley and a bit of local adjustment to contrast may help and id rework a bit with less sharpness, using localised sharpening only. i thing you overegged the sharpness a little. the white on the left rock wants toning down a bit.
i too would go mono on this but it woud be a waste of time if you do so without adressing the blown white areas because any conversion you make and it needs to be a subtle conversion would make these look much worse than in colour.
then in mono you could unload with dodging and burning to make a classic. but like i say its a classic already this would be your version and it would be better to try and put your own twist on it somehow. maybe you have other views that work too.