I would rather have decoupled components that improve in quality independently and are the best at what they do. If you really want a more unified development

I would rather have decoupled components that improve in quality independently and are the best at what they do. If you really want a more unified development method, look into Pyjamas http://pyjs.org/ http://pyjs.org/ . It's a port of google web-toolkit to python. You just write everything in python and then it compiles the javascript front end for you.