Personally, I'm on my toes with Black and White. I think it was a pretty foolish move to put Black and White on the DS instead of the 3DS. Were they so excited about how it was turning out that they couldn't wait for the new 3DS? Bah, whatever.
When I saw the screenshots, I felt kinda disappointed. I guess it was easy to expect for them to look the same as D/P/Pt/HG/SS, but it wasn't just that. The view of the city looks cool, but the overworld sprites of the human beings are just too small. On the DSi or DSi XL, it might look okay, but if you're using an original DS or DS Lite, it's probably going to make you squint most of the time. The battle scene looked okay I guess, but something just didn't look right. Maybe it was the lack of the text box. I'm too used to it. Also, the protagonists look a bit too generic. Maybe it was just the sprites though. We haven't gotten their official art yet.
Zorua and Zoroark are okay I guess, although Zoroark looks somewhat silly due to some certain patterns, but there's nothing terribly wrong with them.
Something else is how fast this is coming in. Usually if a new generation is coming, we get hints very gradually, like Pokemon in movies (Snubbull, Marill, and Donphan in the first movie, Lugia and Slowking in the 2nd, the Latis and Wailmer in 5th, Munchlax in 7th, etc.), but we're just now getting a 5th generation Pokemon in probably the last movie of the D/P/Pt series, and now we're getting all this news at one time. It gives me an uneasy feeling that they've rushed all of this in; however, they could've just been keeping this secret all this time and giving us the news faster so the fans aren't whining about waiting so long for the next generation. Still, as I said, it feels too early.
I'm trying not to be to negative about it though. I'm probably poking at all the bad things and not noticing the good things, but sometimes it isn't easy when you always have high expectations for a series like Pokemon.
Anyway, to the things Black and White should have. Since it's on the DS, it should have 3rd generation compatibility, unless Nintendo's pretending that the DS and DS Lite never existed and just focus on the DSi. Yes, you could just transfer 3rd gen Pokemon to the 4th generation games and trade with 5th generation, but that's a little too much work. It'd get pretty annoying to have to do that. A patch for My Pokemon Ranch would also be nice, but I doubt they'd do that, but if they did, it would give NoA a good reason to finally update it. As for PBR, they'll probably just make some new game, but now we'll get all these people begging for Pokemon Stadium 3 (which I really don't see happening).
And the Light-type. It's been a pretty big debate. Personally, I don't see it necessary. It might be cool, but it really isn't necessary. I don't really like the idea of it, but if they do it, I won't really care either.
As for the Pokewalker, it would be awesome if it worked on it, but again, probably not. The Pokewalker is basically just the equivalent of the Pokemon Pikachu 2 for Gold and Silver. It was more of a nostalgia factor than something they'd actually use for new, upcoming games.
I do hope Game Freak means it when they say they're revitalizing the series with these games, and in a good way. Pokemon's one of my most loved franchises, as well as for others. Until then, we'll just have to see what they have in store.