Agreed, it'll probably settle down in a few seasons to something moderate (i.e., neither the garishness of apple's calendar, nor the usability nightmare of the WP8 app on windows.) I just wish we won't forget the lessons of these experiments, but most likely we'll just be reinventing the whole thing again and again. (Recent example: the horrible 90's emoticons craze is back in messaging apps these days, except they're now higher resolution and are called 'stickers'.)