Natural pool with waterfall to promote water flow through plants. And I think i would add hidden fencing or chicken wire to make a koi pond inside the planted area. The koi are cool, but the also add the nitrates to the water to feed the plants!
We like the idea of the jumping platform and nearby shower. The size and depths looks pretty close as well. Brent would want more of a barrier to mow and edge against, this looks like the grass clippings could easily make their way into the pool.