First of all congratulations for this wonderful mod. I absolutely love it! IF you don't mind me, have another version planned?
Okay, anyway, here are my suggestions:
1) For weapons, you can take the 15th century weapons pack for Shredzorz, it has polearms, polexes, swords and such.
http://www.mbrepository.com/file.php?id=2414
2) You can make good use of Narf's pack. He made some amazing morions and half plates and full plates. And the russian pack would be perfect for the rebels(the armours have fur and leather, they are natural and crude-ish but very elegant)
http://forums.taleworlds.com/index.php/topic,230895.msg5524870.html#msg5524870
http://forums.taleworlds.com/index.php/topic,160392.msg3865757.html#msg3865757
http://forums.taleworlds.com/index.php/topic,100949.msg2526671.html#msg2526671 This one is great for you, it has morions and cuirasses and many things you can use!
3) Freelancer(for me it's all that important, but it would be a good addition)
4) Clothes(you have some very nice clothes but there are a lot more you could use)
5)Bucklers! It is the era of swash-buckling! Narf's pack has some bucklers and you could diminiss the steel shield in size, in order to "make" a new buckler.
That is all I can think right now. I am not a coder, not at all, but if there is anything else I can help you with, please, feel free to ask.