Heavy use of client side methods seems to break a lot of the benefits of using web apps in the first place. A main advantage of web apps originally was that they worked more or less the same on any machine. That Google Maps worked in exactly the same way regardless of how good your machine was at vector rendering. I wonder if the aversion to maintaining state on the server needs to end. You could do almost anything that a modern web app does with minimal client side code and have performance on low end PCs.
