There's a couple comments from people with children here:
https://www.flyertalk.com/forum/marr...pa-maui-5.html
I haven't seen the renovated pool area, but I've heard it's nice and rather large. There is also a kids pool at the Wailea resort; don't know about the RC. I think being able to walk to other resorts, the beaches, and shopping at Wailea are huge pluses.