Despite all the starters looking like Neopets, i'm actually pretty okay with their designs in general. Froakie is my man no matter what, but Chespin and Fennekin aren't horrible. The gameplay trailer seems to indicate that Fennekin will get the long fan redesign type for Ninetales of Fire/Psychic, though it's anyone's guess for Froakie and Chespin's final typings.
The X legendary really doesn't do anything for me with all the similair Pokemon we have gotten design wise, but it isn't a bad Pokemon. Shadow Lugia's cannon forme looks amazing though. and seems an obvious Flying/Dark to me. These guys still look much better to me than the last 2 generations' legendaries, which is a refreshing change of pace.
On the thoughts of this game being a DPP esque game, i kinda hope it is. While this game looks great and the Pokemon design is by far the easiest on my eyes since Gen 3, I don't want to see another game like Gen V, where they are so determined to make a whole new set of Pokemon they just make a bunch of clones (trying to ignore the fire fox thing, since it will at least have a different number of evolution stages). It seems like these pokemon are all around more stylized and i'd hate to see them blow all these kind of designs on one game to hit a wall with Gen 7.
And seriously, worldwide release is probably the best thing about this news. No translation patches and roms this time around. No seeing the entire story on serebii 3 months in advanced, just a small amount of news, closer to release and a generally revamped Pokemon experience.
As far as competitve stuff for this goes, Fire/Psychic Fox seems interesting. It can either become a Droughtless Ninetales with Stab psychic, or it will be something like Espeon with STAB Fire Blast. T-Tar and Heatran obviously shut that down pretty easy, but who knows what kind of new moves we get introduced. There really is no hint towards the other starters though, unless Chespin is Grass/Normal (bleh). Starters, i'm definately calling Flying/Dark for Y, something inbetween Lugia and Giritina-O. Weakness to rocks is never fun, but Dark is a pretty good type especially in Ubers, so i'm sure it'll be usable. Grass/who knows Y is just too strange to call. Though a Grass cover legend shows potential for this thing to overshadow the likes of Celebi/Shaymin/Virizion pretty easily. As some have noted, it has a lot of calls to Arceus, so we may see another Multitype esque Pokemon, which would certainly be interesting.
And of course, X and Y means Pokemon Z is going to be a thing. Zombies working their trend from the big screen to your handheld Pokemon platform in 2014 :D