I have to admit, that I've been waiting for those Civilopedia icons for a long time already. But hey, this thing is darn good.
I've been using this unit since the day you made it. I was planning to do a janissary unit for myself, just the way you did your Muslim fanatic unit, just with those traditional "Posu" type of, err, "hats"... I never got to finish it though (started doing it in december 2001).
Anyway.
The unit can be called a "Mujahid" instead of a "muslim fanatic". It's more historical, although a unit like that never existed (I guess this unit is just supposed to take the place of those European-looking swordsmen), it's a good replacement for the graphics. Mujahid means "Jihad warrior" (well, not the perfect translation, but anyway).