On the topic of 1D images I find that the things I notice is better colour rendition and that the micro contrast is superior.
On the 7Dii front I'll believe it when I can hold one in my hands. Too much speculation and too many very long lead times in delivery for me to think that a product that hasn't even been announced will be in stores soon.
Definitely interested in a crop sensor for pixel density it it meets the same image quality standards as my full frame and H sensor bodied. Until then, not so much.