Titanix, an evolution of Steelix looks good.
An idea that just cropped up in my mind is that, given the significantly huge number of new Pokemon introduced to us in Black and White, perhaps we could see Game Freak do a little backtracking in Gen VI and focus on fleshing out the Pokemon that they have already created from Gen 1 to Gen 5. I am aware that many Pokemon have received changes and additions in their movesets and abilities between generations, but I would now like to see new variants of existing species which would receive minor design alterations, different stat distribution and different typing; not too dissimilar of a concept to Pokemon 'formes'. This could be explained as being a result of the environment/habitat that these Pokemon come from.
I'll use Nidoking as an example. As we all know it is a Poison/Ground type and has fairly even stat distribution. However, maybe there could be a Poison/Steel variant of the species which has slightly lower Speed and Special stats which are instead poured into its Defence stat. I am sure that this could easily be done for a number of older Pokemon, which would guarantee that players are able to use their old favourites with a new twist. Case in point - having enjoyed using the Growlithe line as recently as in White 2, I am now beginning to tire of using it in my team despite my continued fondness of the Pokemon.
This premise bears similarities to the existing concept of Pokemon Formes. However, I would view this concept as finding middle ground between the way that Shaymin's type and stat distribution change from Land forme to Sky forme, and the design changes that the likes of Shellos (and to a lesser extent Arbok due to its body patterns) experiences from region to region. I think that subtle changes such as this would enrich the games further and as a bonus Game Freak would not need to resort to blowing us out with too many brand new Pokemon.
If this were to happen (and believe me it is something that I would love to see), I would still expect that just under half of the Pokemon in the new regional Pokedex would be entirely new species including the starters and legendaries.
I thought of another thing I want in Gen VI: GF getting rid of Pokemon Species.
If gives no information whatsoever and just implies there are actual animals in the Pokemon world which we never see. I don't imagine people in the Pokemon world knowing what a 'snake' is, but what an Arbok, Ekans or Serperior is, honestly.
And then there's some entries that helps absolutely no one.
Reshiram - Wast White Pokemon
Meowth - Scratch Cat Pokemon
Vullaby - Diapered Pokemon
Really? I wonder why they introduced this in the first place. It just feels like a very unnecessary part of a Pokemon's information and something they just slapped on for fun.
I think the region of Generation VI should be based on California and some surrounding United States west coast areas.
In my idea for the game, you would face eight gym leaders (there would definitely be a dark gym, an ice gym, and a low level dragon gym). Next, you would face the Elite Four, who would utilize four Pokemon types not utilized by the gym leaders (optimistically they would use Fire, Water, and Grass as three of their types to avoid unbalanced gyms for starters, but it's really very hard to do gym themes with some of the other types). The champion would use a mix of types. After the E4, you would have the option to face five returning gym leaders, one of whom is from each region/generation. They would utilized Pokemon of the five remaining types not utilized by the gym leaders or the Elite Four, allowing all types to be used. Hopefully the lesser-used gym types would be the gym types in the region.
Contests would be fleshed out to contain battles and the like, with different moves scoring points based on what moves they were used after and such, with a turn limit to the battle to represent the time limit. Either knockout or points would win.
There would be contest halls throughout the region with the final grand contest hall in an area based off of Hollywood.
There would be a ski mountain area, based off of Mammoth Mountain or Big Bear (and would definitely have some Mamoswine and Ursaring =P) with the ice gym there.
There could be a fossil type area with a ground gym based off of Santa Fe, New Mexico and a casino area based off of Las Vegas, Nevada.
The big shopping area could be based off of Beverly Hills.
I'll add some more ideas later.
I hope that they have put in new Eeveelutions and a pure flying type in Pokemon X and Y, but Chespin, Fennekin and Froakie do look like cute starters!
Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again... Please don't make the villain team look like clowns again...
^ I second this.
I hope Dunsparce will get an evolution.