This is an absolute non sequitor, but I had to share. Have look at the bathroom at Bar89 in Soho...
Its a clear door....perhaps not the best application for a bathroom. But watch what happens when you lock it.
OK, this is a pointless non Yale post....However, residential ideas emanate from two places, Europe and from the commercial arena.
So why not do a frostable, clear bathroom door...you could be five years ahead of the next sweeping trend.