I love your place and setting! If i ever get a chance to "upgrade" my land, I would search out a place that allowed my to dig a pond much like yours rather than a round bowl. I didn't have many options on a hill-side to get depth.
Same as many here, rarely a day goes by without stopping at the pond to see what is going on. On the way to work in the morning, I am forced to pass it by, and it is hard not to stop and get out to throw a line a few times.