Not disagreeing with anything posted - just playing the 'what if' game.
Background: I grew up with 98 pounders and true unlimited weight classes (with 12 weight classes vice 14). I had the pleasure as a 126/32 pounder to wrestle with Coach Hemmerling (that built some character). I've seen the 190 pounders wrestle the 325 pounders ... and quickness is a factor - right up to the point where the blob falls (picture 1950's eerie music and a black and white movie theater) and the little guy is basically squished. With the super small and the super large you're dealing with that very small sigma of the population. Should they be included - yes. Should an additional class be added - yes. Do you face the possibility of a team line up similar to kids' wrestling - yes (if you continue down the logic trail).