The chariots are fairly slow -- they can trample fairly big units and do considerable damage, but against hordes of individually modest units one might be better off with 'normal' chariots with more AP.
Thugs are nasty, expensive, and pop-eating. The sacred units are much the same way, which means massing them is going to be ugly if you're playing a slow, huge-map game where pop might matter more, or if you simply like playing the vaguely benevolent ruler. OTOH, you do get astral, so you can Shroud your non-sacred random-2 mages if you took a relevant bless. You can get E2, so boots and hammers are accessible. N2 will help with the supply issues, but not the pop-eating.
Keep these units in top shape with a recruit-anywhere Healer(50) N2. Handy.
Heroes are fairly nasty -- children of the Lords of Civilization.
Haven't played around much with the proto-cavemen yet. Decent environmental resistances and constitution, darkvision 50, unremarkable skills and equipment.
Weak access to most paths (water and death excluded), usually 2s, strong in blood.
...oh, and if you do get death and start reanimating, the longdead you get include longdead Nephilim and so forth.
