Those fountains are so cool. The old long term fountain plan was really cool - not sure when it will ever get implemented now. The reflecting pool was to become zero barrier entry. The dome fountain would stay as is. The brutalist fountain was to be replaced by an enhanced topographic map, with oversized rivers and lakes where water flowed down them. Still pretty cool (not as cool as the brutalist fountains but what can you do, they aren't really safe or easy to maintain).
A big problem with the reflecting pool and the brutalist fountain is they weren't designed for wading, and AHS requires the water to be treated. The treatment eats at the concrete because the concrete wasn't spec'd for the treatment back in the day. So they will need to be replaced. Frankly, when the reflecting pool failed in what was it, 2012? it should have been replaced then.