When it was first announced that Pokemon X and Y would feature "Mega Evolutions," I was very skeptical. This seemed like something straight out of Dragonball Z. In the heat of battle you can now temporarily evolve certain Pokemon into "mega" forms using a "mega stone." This is the equivalent of Goku going Super Saiyan in order to beat Freiza or Cell.
Before people start blasting me with hate messages, let me start off my saying "I love Pokemon." I've been playing Pokemon since Red and Blue and I don't plan on stopping anytime soon. I did grueling chores for an entire summer just so I could get my Gameboy color and Pokemon Blue. Pokemon is a part of my life. That is the reason I'm so concerned about "Mega Evolutions." They just seem so un-Pokemon. It's like they figured "hey, nobody cares about Digimon anymore, so we can start using some of the stuff they did right."
Pokemon has changed drastically over the last 16 years, but the core game has always had the same basic concepts. X and Y plan on shaking things up, a lot. When you change something people love, you always run the risk of alienating certain fans, but you don't want something you've worked so hard on to become stale.
I'm all for change. I'm one of those people who felt like the series was getting a little bit stale. Black and White did a great job building a more engaging and immersive storyline and that was something the series was in desperate need of. X and Y will be adding customizable main characters (it's about damn time!), the ability to ride certain large Pokemon, Mega Evolutions, "Horde Battles, and it's the first handheld Pokemon to be in full 3D. There is definitely a lot to offer for both core and casual players.
Maybe I'm just insane. Maybe I'm the only person in the world who thinks Mega Evolutions are kind of a cop-out. Whether you are excited about them or not, you can't ignore the fact that this is one of the most un-inventive additions to the Pokemon franchise in a very long time.