well for a start, Aslain has nothing to do with the winchance on XVM.
if you want them to do some changes with the winchance you should post on their official forum and not here.
http://www.koreanrandom.com/forum/forum/57-xvm-english-support-and-discussions/
i personally would want the win chance to only be shown after the battle has ended. or not being shown at all.