My gosh the devs have been busy
As far as I understand you can now have reaper look as you like (as long as your not scared of a bit of code)
http://www-dev.reaper.fm/sdk/walter/walter.php#layouts
I love the fact that everything rescales as it should and the new innovations in design that this new scripted approach has wows me and scares me.
I do hope the introduce the extended channel as a toggle button on the individual tracks as this would save resizing the docker 99% of the time.