Eh, I don't love the immediate expansion of a herd that already is a little pressed for space. The zoo really seems bent on having big groups of megafauna when the masterplan is brought to fruition. If they want to hitch their wagons to hippos as a flagship species, then they need to raise money and build an exhibit that can accommodate a larger group. Big giraffe exhibits sound cool and I have no idea what happens to Giraffe Ridge, but it seems kind of silly to have two potential big and open spaces and not use them as an expanded hippo complex.