[kls]

The problem with bending over backwards for non-js is that you double your dev cycles

I would think you are being generous. A marked advantage of JS based RIA is rapid time to market, it is a simpler development model that provides superior usability when done correctly. The old page post model is a considerably slower development model. Hence all the server side frameworks, people have been trying to crack that nut, in the page post model, since someone bolted up CGI POST to a script and spit out some dynamic HTML.