Currently we have the same layout as in Q4 by default, but you can specify your own interface HTML using the <interface> tag:
http://quest5.net/index.php?title=Interface_elementThis means you could set up your own HTML <select> lists etc. Then you can call Javascript with "Request(RunScript, ...)". This could then populate your <select> lists etc.
You can see an example of custom Javascript in YouTube.aslx in the Samples - when you look at the cinema screen, the Javascript embeds a YouTube player in the page.
There's still more work I need to do in this area - like being able to turn off the default panes for Q5 games, and then being able to do things like turn off the default command box etc., but the concept works.
It will also need refining a bit because the same mechanism will need to work with WebPlayer for the "play online" versions of games.
But the result will be a fully flexible interface that can be set up exactly as you would like it, using technologies that you already know, that will work on both the desktop and the web. Should be pretty cool!