Most RR builds I've seen just mostly ignore the Cha and focus on Str... which is an issue with the build, when half of it is just straight up ignored. I can see why the MAD exists (Strength, because you specialize in beating people over the head with a club, Cha because you're supposed to be more intimidating than normal) but I also suspect that they did it because they overvalued the effect of 'Rattling' and hamstrung the build from day one. However, I may just be a little paranoid there.