Well, buddy, I really don't think so. After you reach level 100, there are good places to hunt/ to level. As you even know 100 + is a good place, but there isn't the only one, there are Meteor mash, yellow hall, elder charizard's valley (100), elder charizard's valley (130, when you reach this level), there are nice places on hoenn region too, anyways, you just need find out a place that you wanna stay and appreciate this, listen to music, talking with friends, etc. (I do this and i like xD). When I was level 130, I stayed the biggest part of the time, leveling on the end of meteor mash's quest, till i get 150 level. Some steelixs, machamps, Tyranitars, Rhydons, a nice loot for sure, etc. About the stages as you told ("fix the time"), I think that it is fair enough, as it is. I don't know if something new/different is coming to players 100 + by part of staff, but as I've told you, for me, it's fair enough.