(Be forewarned this is probably incredibly hard to implament.) The title really says it all. A tabbed interface; not using the browser tabs, but if you have ever saved something like en Excel Workbook in an HTM format there are tabs to switch between sheet. Something like that. One tab for the tabletop, one for the avatar, one for the chat window (which can be hidden when needed), and so on. This suggestion may seem un-neccasery (for my friend with the 37:" HD monitor), but what about me and the other who try to use roll 20 with a 10.1" monitor. Or even a mobile app?