This mod is brilliant! I have been disappointed by medieval-style mods in the past, but this one has actually impressed me. Especially the graphics; they are excellent. The more balanced horses are great too. Horses won't die unless you charge unarmoured ones into ranks of pikemen (which wouldn't have worked in the past either).
The map is indeed bugged (lords getting stuck in the Thames for example), and I would suggest brushing up on English geography a little (Brighton appears to be in Dorset, Telford and the surrounding places are...Welsh? :s) and also changing the style of Paris (seriously...mounted archer tournaments? :s), but other than that, I am highly enjoying it!