In response to Haroth's suggestion in the SD&M forum, I've decided to create and upload a tutorial scenario that explains how to achieve stealth-based gameplay and touches on some of the things you can do with it. It's obviously modded, which means the vanilla crusaders likely will never see what it's like; it's also fully voiced, which means 56K connections are probably better off doing something else.
Note for the uninformed: there's no custom installer or anything, so you'll need to back up your data (empires2_x1.dat and empires2_x1_p1.dat) yourself. It's a small price to pay; if you don't feel like doing it, that tells me all I need to know.
Instructions: UnZIP the package in the root of your AoC directory, test the scenario through the editor and enjoy the show.
I threw this thing together pretty quickly; if there are any unexpected side-effects like meteor storms levelling your house or The Netherlands finally winning the World Cup, just let me know and I'll fix it.