The featureless terrain is certainly a disappointment in RTW. There's a few slopes here and there, a few thickets of trees and the odd rock outcrop, but generally every battle plays out much the same regardless - like it's one big open flat landscape. Even with massive mountain slopes, you can still attack from all directions (unless the red line prevents you), and there's barely a natural barrier in sight. In MTW I was forever trying to gain the high-ground or stationing my force near some buildings or forest for some cover. With the fast battles of RTW, terrain is often a minor consideration. For example: cavalry may be inferior in wooded areas, but you can charge them so quickly into the rear of the enemy and rout them, that it seldom matters.
I hope in the next installment of the TW series, the terrain generator creates more realistic and varied landscapes. Coupled with a larger map area, you could have armies defending a narrow moutain pass, with the attacker forced to attack the chokepoint whilst also sending another force on a long journey to get behind the enemy position (with the route also guarded). That type of thing. Basically having the terrain feature more heavily in our tactics would be great.
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