Well, if everyone seems to like the idea, I will include it, via random number simulator, the numbers for each character based on the order they appear on the character list. Rio-1, Rose-2, Kiragi-3, etc. 
Speaking of the character list, there are 10 characters. I would prefer a full set of 16, so would anyone be willing to double up and create another character? I could make one as well, if you guys are cool with that.