Hey guys I'm new to the forums but I've been thinking about something

Does any body have an opinion or idea about how one could transfer the fantasy rule set to use for 10mm warmaster miniatures rather than the standard 28mm.

Im asking because it would be much more convenient to stage 3000-4000 point battles with limited table space using 10mm miniatures. (the issue in my mind seems to be how to remove casualties from units)

I have some ideas in mind but would any one else like to share?