Speaking from the standpoint of the player, nothing was much more fun than the multitiered map system in Civ II Test of Time. I'm not sure why it was removed but the system was great on so many levels for creating mods and scenarios. What surprises me is that it looks like nobody has ever attempted to add this to civ4. I know very little about what is going on inside this whole civ4 mod thing (it was so much easier in the days of civ2, just tweak a few text files, edit the bitmaps, and away you go!) I DO know C++ (professionally) and am familiar with the concept behind xml. Before I go committing to do something here, I'd like to get a feel for whether or not anybody else even cares. Is a multitiered map of interest to anyone else?