Thank you so much for trying it out and for your feedback. :) Hehe, you're absolutely right about the movement, btw. ;) The mixamo animations I picked didn't really suit this guy. ;) Looks funny, especially when running to the right. Also the slight sliding doesn't feel too good, but didn't have time to focus on it any more than I did. :) Such is life.
Those floor markings are actually a really good idea either way!