Hi, thanks for posting this. I'm sure you are eager to get some feedback. I didn't read everything but I noticed one glaring problem right off the bat. Its that it is a 10 issue mini series. In reality, there are no publishers that would pick up a mini that long. Even the independents would most likely pass because 10 issues are a big risk to take. My advice would be to trim this down and find a smaller contained story for Severa. Find some way to make it a unique 2 or 4 issue story and you will have a better chance at getting it picked up.
Your descriptions seem good. The best advice is that you clearly state what you want because very often if you assume they know what you want they will most likely miss it. Artists follow your direction so be specific.
Good luck and i hope this helps.