Wargs -> faster forest movement

Horses -> faster plains movement

Wargs -> large combat bonus in forests, small combat bonus on hills, no change on plains

Horses -> large combat penalty in forests, small combat penalty on hills, large combat bonus on plains

Wargs -> base movement 3 (4 in forests, 3 in hills)

Horses -> base movement 4 (3 in forests, 2 in hills)

Something like that? I like it.

Actually it may interest you all to know that it has been mentioned in another thread that a resource tile can be made into a variable tile able to have more than one possibility for building an improvement on it.  I'll try and find where I was it written in at but it was by a stardock person so it should only be neccessary to modify the tiles to give the other option for now or repupose them as suggested.

Edited one thing on your post in bold, flipped the horse move values for forest and hills, but something along those lines, yes.  However, the specifics are not all *that* important, what's more important that each receives a bit of flavour.

Well ... it was an "organized and prepared" pikemen force that defeated cavalry. A pikemen force that was charged from behind, or charged on all sides, was just as dead as the swordsmen. (but not quite as dead as archers or siege crews)

Pikemen only defeated cavalry when the cavalry commander was foolish enough to charge right onto the waiting pikes. More likely to happen in close quarters with limited room to maneuver. Where there was room to maneuver, the cavalry would be used to flank the pikemen and go charge the annoying archers in the rear, or any other softer and strategically important targets.