> You won't be writing code in the browser anymore
You could be. Impement a URL like http://mydomain/scripts/MyScript.bytecode. This is a page which compiles, say MyScript.rb into bytecode and delivers it back to the client. You get a new copy by saving a file on the server and hitting refresh, and there's only one interpreter to download.
That just moves the bytecode compilation to the server -- so you're back to my original point of generating the code statically. In fact it'd probably be worse, since there is no reason to compile MyScript.rb to bytecode more than once. It's like generating a dynamic page with Rails when all you really need is static, cacheable HTML.
You could be. Impement a URL like http://mydomain/scripts/MyScript.bytecode. This is a page which compiles, say MyScript.rb into bytecode and delivers it back to the client. You get a new copy by saving a file on the server and hitting refresh, and there's only one interpreter to download.