I don't really see the need for more ranks as there are plenty as there are.
I don't understand what your intentions are with "Remove kicks". Having the ability to let other moderators and administrators within a clan do their job, of moderating and administrating within the clan is necessary for larger clans, and even smaller ones if the clan leader has to do normal daily tasks and isn't on 24/7.
I absolutely agree on having the option to require a minimum total level or combat level. Very cool idea. I would vote these two additions in.