I suggest the implementation of Ron Losey's popular RCM. This game already features much interesting detail and realism--the RCM would bring the battle between armoured knights to near-reality, immersing the players even more fully in this medieval setting.
Actually, I think the RCM stats will make the mod easier in a lot of ways. Metal armour is a lot more effective now, and arrows do cutting instead of piercing damage so you won't be pincushioned. I found long spears/pikes the most difficult part of the game (since M&B's engine can distinguish the shaft from the blade of the spear), but now they're less effective on armour slower as per realism.
So, unless some factor is being forgotten by me, I think the game will actually be easier once you get some good armour. It'll only be a .txt download and you'll be able to keep your saves, so you could try it out once it's finished.
EDIT: I have the file up: http://www.mbrepository.com/modules/PDdownloads/singlefile.php?cid=8&lid=1328
(for L&R Version 1.508+)
This is only the first version, so quite a few items will be wrongly statted, or even left entirely till I get some advise. Play around with it if you like, the majority of it should be fine.Credits:
Thanks goes to Ron Losey
for the help he gave me, and to NICK.ALTMAN
for allowing me to create this add-on for his great mod.
Great thanks goes to jordan
for his ItemEditor which made this add-on possible, and to Moss
for showing me this program.