I feel guilty advertising my mod here

[Zingydex]

Normally I'm leery of mods that propose to raise the bar difficulty-wise in an already-difficult game. Out of sheer curiosity I tried this one, and it was a fairly pleasant surprise.

Only one complaint thus far - the background for the menus and subscreens has got to go. The design is nice, but the mostly-white color scheme is really hard on the eyes and makes it tough to read the end results of the game's number-crunching.