When the map opens and/or the center button is pressed, center the world map on the current area. This would be particularly nice for mod with large world maps, like the Big World Project.
Patch for engine and BG2 GUIScript
A modified version of the GUICommon changes was already applied. Centering already works on standard resolutions - are you sure expanding the window wouldn't break that? GUIWMAP2 appears to be from the mod, so this patch can't go in like this at all. Sounds like something for a 2da.