I'm hoping the new Total War: Rome 2 goes back to the older style unit types instead of the handful of options you got in Shogun 2. Not that S2 wasnt fun, but all of the factions used the same units and it kind of made each battle the same until you got later into the game.
I still think the first Medieval was the best though, I remember playing as the French the first time I played it on Hard and I got excommunicated within like 15 turns and wound up losing actual France to both the English and Spanish (bunch of snakes down there I tell ya) and had to take my king on a boat along Africa to the only two provinces I had left in the Crusader States and like one turn before I get him there with the only good troops I have left there's a massive Egyptian army coming to take Acre after I had to abandon Jerusalem and I'm sitting in Acre with like 4 units of shitty spearmen, some shitty archers, a Turcopole for a general somehow, and what saved me was one unit of Dismounted Chivalric Knights and the fact that I upgraded the shit out of Acre for this exact reason.
now when I say "massive" I mean massively cheap as far as the Egyptian army went, probably was like 1/3rd peasants, 1/3rd militia, and the rest was either their slightly less cheap swords or spears plus their general who was an actual general with armored guards unlike mine who could shoot arrows and run away as a talent.
Long story short, the AI decided to just focus on one gate and my Chivalric Knights were dropping their units left and right and once they finally got to like half strength I pulled everyone back to the next level and just let the towers and burning oil do work and by the time they got to the inner gate and their general came up to fight it wasnt really that unbalanced numbers wise anymore so I just threw whatever spears I had left at their general and just as my Turcopoles finally ran out of arrows and I was about to send them into melee I see their general's banner go down and it just turns into a straight rout and I did indeed send my general into melee but this was straight chasing dudes down and I just remember sitting there when the victory message popped up going like "did that just happen?"
obviously that doesnt do the battle justice but I remember thinking it was pretty cool back when I was 13-14 years old, felt like a badass for sure