I'm a little surprised we're 2 expansions in without this addition: Clearly mark the technology on the tech tree that unlocks each civ's special unit or building, or at just make the icons for the specials include a border color/symbol/animation that tells you where it is. This is such a basic thing but it would make such a huge difference. (I see in GNK they finally added descriptions of these objects to the main menu screen, only the on-roll over hint text only displays AFTER you've started the game.) BTW I'm looking for the Aztec special building right now. Where is it?