I think Stefan liked the idea of ending the game area of the window at the playerlist, so that you don't have people running around under your list (makes it the same as a separate window if you think about it)
everything else should be able to be scripted (i.e. tile levels) the new scripting engine should be able to run more complicated scripts with less lag, if I'm not mistaken (this is where Jagen backs me up or smacks me down
)