I would love to see some good looking Dragon Pokemon this generation. Personally, I think it would be kinda cool if Gamefreak created three 'elemental' Dragon Pokemon. A Fire/Dragon type, a Water/Dragon type and Grass/Dragon type, and make them all similar in appearance. What I'm pretty much talking about are Dragon versions of Pansear, Panpour, and Pansage. I think that would be a cool idea, and I love a good dragon Pokemon.
I also hope if they have this idea, or any Dragon Pokemon they do have, looks both good and powerful at the same time, like Dragonite.
Also, I'd love to have a non legendary Phoenix Pokemon. We have Ho-Oh and Moltres, but we don't have any non legendary phoenix like Pokemon. A Fire/Flying Bird Pokemon would be great.