If we kept the current range of weight classes and ended weight cutting it would destroy the UFC. Since your average WW's are 5'10 and weight 185 to 190lbs on fight night. Having the WW max limit be 170 would cause everyone to have to drop a weight class (meaning drop lots of muscle mass). And remember that GSP was a perfect example of the ideal weight and athleticism for his height and he would weigh188lbs or so. Fighters like prime GSP, Hughes, current Lawler, Hendricks, Woodley, gastellum are too built, stocky, to cut to LW and be in optimum shape. And they all lack the height and frame that MW's have. Thus they wouldn't be able to successfully fight at MW. For example. Imagine same day weigh-in's and they do dehydration tests to make sure you aren't dehydrated (i.e. trying to cut). A fighter must be hydrated and then the fight starts a few hours later and they weight again right before the fight. Any fighter who weighs over the max limit for each division will not be allowed to fight if they miss weight by more than 1lbs (2lbs as weight classes go up). Women's divisions . Atomweight (If it ever happens).= 105lbs to 116lbs. Straweight= 115lbs to 125lbs Flyweight (if it ever happens). = 125lbs to 140lbs. Bantamweight= 135lbs to 151lbs Feathweight (if it ever happens). = 145lbs to 170lbs. Men's divisions Flyweight division= 125lbs to 140lbs. Bantamweight division= 135lbs to 150lbs. Featherweight division= 145lbs to 160lbs. (Connor would have to move up to LW, which as a Connor fan I'd be happy for). Lightweight division = 155lbs to 170lbs. Fighters can't weight more than 171lbs and must be hydrated. Welterweight division= 170lbs to 191lbs. Fighters can't weight more than 191lbs. (This wouldn't be an issue since GSP and all WW Weight less than 192lbs during fight night). Another 2 pounds to shed of fat wouldn't be hard. Middleweight division= 185lbs to 208lbs. (This again works since the basically all MW's are 200lbs to 205lbs). Light heavyweight division = 205lbs to 230lbs. (Again this works because no LHW is cutting 30lbs of water weight and then weighting in 30lbs heavier as far as I know.) Heavyweight division= 230lbs to 285lbs. Fighters can't weight more than 286lbs. To me this would be perfect. It would only really effect the lower weight classes. Since FW are only 10lbs away from the LW minimum weight and most FW are actually fighting at a comfortable 150lbs to 160lbs. Still though FW are shorter on average and smaller frames than LW's, so LW wouldn't try for the cut since they wouldn't be allowed to dehydrate themselves. It also, prevents +6ft MW from trying to cut to WW as easily.