Accessible playgrounds in the Bay Area

I want all children to have access to playgrounds and nature. One of the main problems I see with accessible playgrounds is that the designers lose site of the whole nature part.How do we make sure playgrounds are inclusive of children of all abilities but still include all the the things kids need to play and learn?How can it REALLY be done? Not just following the letter of ADA compliance that result in playgrounds with no nature and too much hot plastic surfacing?I'm reading and thinking on this. Playgrounds can be crazy expensive. Natural elements might seem to imply too much risk, uncertainty and unrealistic upkeep needs. Why? And what to do?Is no playground better than a playground some kids can't access? Both scenarios are disheartening.Some interesting resources:Bay Area Accessible Playground Finderhttp://www.accessibleplayground.net/Magical Bridge Playground in Palo Alto, CA