A waterfall is a good idea. Only, I would like the territory to be better landscaped for people's recreation: beautiful paths, more comfortable benches, children's areas, etc. Bring modernity
Of the advantages, waterfalls and ducks are identical, the noise of water.. of the cons: the stink. The water stinks a lot!!! And a shabby bridge, it would be good to put it in order, make more benches by the water, and lighting.It's dark to walk at night (it's scary.