I was fine with the way the distribution of Pokemon with Hidden Abilities worked through the Dream World in Gen V since you were able to trade and breed Pokemon with Hidden Abilities without a need to change their appearance, get new types, and have stat increases. But Game Freak apparently thought that it was a terrible idea to stick with for Gen VI by shutting down the Dream World when XY are released worldwide by actually having Pokemon with Hidden Abilities change their appearance, get new types, and increase their stats temporarily when there was no reason for the change at all. They're just doing it probably to cover up new Gen VI Pokemon with permanent evolutions that would've been something to look forward to more than old Pokemon in Gen VI with a fresh coat of paint. Just give me old Pokemon with new Hidden Abilities instead of needing to change their appearance to do so through "Mega Evolution".
To make matters worse Lightningrod Zapdos and the Kanto Starters with their Dream World Abilities will most likely never be released outside Japan before Gen VI arrives, meaning that they plan on making Mega Evolutions for the Kanto Starters by changing their appearances as well including Charizard as a Fire/Dragon Type. Sure not all Pokemon will receive Mega Evolutions but there's already rumors going around that Scizor, Sableye, Jynx, and Donphan may be getting Mega Evolutions as well. I just feel that Mega Evolutions feel like poor game design as it will only contribute to more power creep in Gen VI for Competitive Battling. Pokemon with new Hidden Abilities without having to change their appearance and permanent evolutions instead of temporary one's would've been a better solution for Gen VI but unfortunately Game Freak decided not to go that route. It really feels like Game Freak is trying to merge elements from Digimon and incorporate them straight into Pokemon for Gen VI which is a terrible idea.