Since I was messing with the map window again tonight, and haven't seen this wished for yet (I've seen it requested though)
I wish the MVW_MapRenderArea element of the mapview window could be dynamically resized ingame without having to do a loadskin.. Then we could make resizable map windows..
Currently, You can make the render area resize when you resize the window.. But the actual map won't resize until you type /loadskin SkinName 1..