Ranked PvP is, as thor said is post-game feature ( end game). Clearing a region will be more beneficial for you as well, considering that you'll have access to more pokemon. Also considering the fact you can do PvP without entering ranked, so you might want to consider having mock battles with your friends. Other than that, having random pokemons (level variety) in ranked PvP will create more unequal terms in the long run.
It shouldn't be an end game feature, it encourages more players if they can do ranked pvp when they get their 8th badge in kanto your point about unequal is negated since all pokemon will be set to lvl 50.Having ranked pvp early encourages players to explore the whole game rather then stop in kanto and get disenfranchised by the high level cap required to join and move on to a different game.The end game goal should be having multiple pokemon to work around with your team and better spots to train;instead we have end game content only available to those who have access to the macho brace, new exp training spots and such.
Any pokemon pvp worth playing has always been at level 100. I would rather them have tiers like smogon does to split up op pokemon to create several metagames for people.
FYI it took me a day in a half of playing to farm a good magikarp, ev train all stats without a macho brace, and get it to level 100. Really doesnt take as long as your making it seem.
