Holy Ho-Oh! Those look amazing. o3o
First my comment on the trainers:
Some of the regular trainers look really good! And it seems that some kinds of RSE have returned to HGSS (don't beat me if they're in P/D/Pt, I have yet to play them D: ).
The Rangers look very nice in their new outfit, as does the Pokenerd with his mechapikachu. Too bad the Pokémaniac's outfit has become far from recognisable. D:
And the Bikers without bike (Cue Balls?, can't remember the exact word anymore) look awesome. Have you seen their jacket? There's a Gyarados on it. o3o PS: does the real biker's motorcycle have some sort of Heracross horn on it? ô_o
The Jotho leaders got a very nice update. Falkner looks awesome in his new outfit, although I remember his Hakama-like pants being slightly longer.
Whitney and Bugsy look just fine, but Morty changed a lot, I barely recognised him...
Pryce, Chuck and Jasmine look very nice, and Clair just looks cool. 8D
Lance's hair looks a bit off in his front sprite, but he's cool none the less. XD
As stated before, Will looks a little too feminine, Karen looks okay, though i kinda expecter her to have blonde/white hair, not blue... but anyways.
Koga looks nice as well.
Now Kanto. Brock's face looks a littly wierd (too small?), Misty reminds me of her GSC sprite, Lt. Surge, Erika and Janine look nice. Sabrina... Well Sabrina, if it's her, changed the most. Her hair was cut. D: And dyed. Wasn't she known around the Pokécommunity (not just the forum) as a woman with this really long BLACK hair? :0 Well, but it is a nice sprite none the less.
Blaine got out of the labcoat, awesome. 8D He looks like a sneaky gentleman now. XD
Red looks awesome, as if he really has got something to hide. Blue makes a very nice gymleader. ^_^
And is that Bruno (remind me again what he is doing 3 years after RBY/FRLG...) and Giovanni I see? Nice. ^_^ So many familiar faces. =3
The heroes sprites look very nice as well. ^_^ Can't complain, can't complain.
As for the pokemon, I'm happy to see such a major update since GSC. Many of the poses are recognisable (aren't some of the animations direct addaptations of Crystal?).
Also, it seems as some of the Hoenn Pokémon look as if they used the RSE colourscheme to be coloured (no, not the RSE colours, the way it's coloured, shades etc~).
Very nice sprite work! Can't wait to see them in-game. 8D