A simple but yet very nice feature would be to have the ability to use one (easy) keyboard shortcuts to hide/show all (or some choosen) tools palettes.
And please, please make it the "tab" key (like in maya, lightwave, photoshop, mirage...).
also it would be nice to be able to configure wich palettes you want to hide, for exemple if someone want to keep the timeline.
Thanks for listening
/jb