Roll in curbless shower with a frameless glass shower door. Go to the National Association of Home Builders web site and look for contractors with a CAPS designation (this stands for Certified Aging in Place Specialist).
Walk-In showers are gorgeous, but are you a good candidate for one? Here's 4 things you need to know about walk-in showers: http://www.mosbybuildingarts.com/blog/2012/11/01/4-things-you-need-to-know-about-walk-in-showers/
Really nice design for dual sinks and all access. I could see the wall that the sinks and the bench are on disappear...the bench could be attached to a bathtub on the other side and the sinks could be accessed from either side, drawers pulling out on both sides.