Gen in a hospital gown.
Ryu dressed as a hobo.
Ken wearing a business suit.
Chun-Li’s alpha costume.
Zangief wearing a Hawaiian shirt, shorts, flip flops, and sunglasses.
Sagat in a traditional Muay Thai get up.
Abel in Jean Claude’s Bloodsport outfit.
Cammy, Sakura, C. Viper, and Rose wearing bathing suits.
Fuerte should be a mariachi
http://www.hotpep.com/Hot%20Peppers/Assets/band%20photos/mim2_mariachi.jpg
Or just gimme dat sombrero!
Fei Long in a biker jacket. (Bruce Lee was into motorcycles, right?) Maybe have a “Hitenryu” emblem on the back.
And while it isn’t possible, seeing young Sagat would be pretty cool.
Cammy in her Alpha 2 fit
Dee Jay in a suit like Eddy from Tekken
Fei Long in the yellow speed suit
Bison having his cape
Cody in Final Fight fit
Abel in Alex 3rd strike fit
Ibuki in civilian fit
A hanbok probably wouldn’t mesh well with a kick-based style. Even though you could probably design one that physically allows for fighting, it would look kinda off having the skirt stretch in that fashion.
Visually, a hanbok is primarily a chest-to-floor skirt. and Juri’s supposed to be able to kick above head-height.
Abel: Alex would be cool (3rd Strike)
Balrog: I hope they keep the SF4 alt. I like it.
Blanka: Jeans or something. anything would be better than Safari.
Cammy: ALPHA OUTFIT!
Chun: Alpha outfit, this one: http://media.eventhubs.com/artwork/chunli/alpha_02.jpg
Viper: I think she would look cool in the yellow outfit from Kill Bill.
Dan: Sean from 3rd Strike. we all know he was the Dan of SF3… lol
Dhalsim: Ghandi, or stretch armstrong. or Oro from 3rd Strike.
Honda: OMG FAT BASTARD FROM AUSTIN POWERS!
Fuerte: One of those bull-fighters, with the red flag thing.
Fei: Obviously has to be another Bruce Lee costume.
Gen: whats his name from Kill Bill vol.2., Pai Mei or whatever his name was.
Guile: Charlie’s costume would be awesome.
Ken: That badass costume from the SF4 artwork that the bald guy is wearing.
Bison: CAPE
Rufus: a fat Yun costume would be hillarious. (3rd Strike).
Sakura: I liked the SF4 Alt (colour 10), if that was the alt with different colours that would be awesome. Or Mokoto from 3rd Strike.
Seth: obviously either Urien or Gill from 3rd Strike.
Zangief: Hugo, lol.
All others I have no ideas or suggestions for.
I have no idea what Ryu, Gouken or Akuma could have as alts since Ryu has always had the same look.
JURI ALTERNATE = JUNE FROM STAR GLADIATOR http://www.fightersgeneration.com/characters2/june-capcom.jpg
Blanka - Freakazoid alt
And give Fei those huge sunglasses Bruce used to wear in interviews… Did I just date myself?
+1 for Blankazoid
That’s the Yellow Bruce Lee “Game of Death” Tracksuit Outfit in Question for Fei Long 
Guile in Dress Mess would rock as well, http://usafflagranks.com/usaf_mess_dress_uniform_files/image005.jpg
Also keep in mind that ALL Vanilla SF4 Alt’s will roll over to SSF4 so all the folks in SF4 will have the old Alt and one new Alt.
All folks “New” in SSF4 will have TWO new alts, Yes that means everyone will have THREE Outfits to choose from.
Dan needs an outfit like Robert Garcia, just to further make fun of SNK. Since he’s got Roberts hair and Ryo’s gi. And it’d look cool. Give him like a leather jacket or something.
Fuerte NEEDS a sombrero.
Maybe I missed it but I don’t think this has officially been confirmed, has it? Far as I know its just people assuming everyone will get new ones.
Anyway…Sagat needs http://www.demajen.net/superdojo/pics/youngsagat.jpg
that is going to be expensive.
i’m guessing the price of 2 full sets of alternates will be more than the not full price game.
Well, Juri’s supposed to be more provocative anyway, so why not just alter the Hanbok design to be shorter, thus giving her more mobility in the legs.
if juri gets this outfit as an alt. i will spend 1200 MSP just for it 
[media=youtube]qCHKXICefFw[/media]
Then it’s not really much of a hanbok, then. Still, pretty much the only time you see people wearing them is at weddings or a couple holidays a year. I can see Juri much more easily selecting something like Anna Williams’ dress instead.
They addressed that in a blog post; they’re trying to fix it so it looks fine for her regular outfit.
I’d like to see the alts not as like different outfits but different character designs. Like I heard Juri had like 500 different concepts, why not use a few of those?
Or like for t.hawk, I’d like to see a totally different take on him as opposed to what we’re used to seeing.