Hey rongphale, you have been doing what most of us would have liked to do in an elderscolls game since, well, Morrowind I think. Since before Skyrim came out I've written down ideas for mods, the one most interesting to me being mounted combat. The game "Mount and Blade" really hit home for what mounted warfare should be like, and I've included that warfare mentality into my ideas for mounted combat in Skyrim. I would have loved to do the mod but have never done any modding in my life so it's not very realistic for me to delve into something as complex as mounted warfare. However, I think I'm pretty good at laying down the framework for what a mod should be.
Here's a https://skydrive.live.com/redir?resid=16DE20B714794BA8!107&authkey=!APkDQrF0jvyd22g containing what I have come up with so far for a mounted combat mod in Skyrim. I've updated it today after reading through this thread (you guys have some good ideas!) and discovering your efforts to make us all very happy gamers

. It's long and detailed, but I think definitly worthwhile for you to read (I'm pretty passionate about it if you can't tell).