Street Fighter Alpha 3 Jada Wave 2 speculation:

 Oyajii!!! With Storm dropping Dan as their 4th figure, I am left to wonder WHO can Jada reveal to entice folks to stick with them instead of Storm.

Unfortunately this means that our buddy Dan will not be on the list. I will also skip all the other characters that are from Street Fighter II and look exactly the same as their Alpha looks. I know art style differences and all that. I'm going for unique. Characters that aren't from Street Fighter II. 

Rose is the elephant in the room:

Her dress makes her impossible to be poseable and wear a plastic dress. Soft goods would be difficult as well as having the third or 4th largest breasts in Street Fighter. Only surpassed by Mika and Viper... and maybe Laura. Pointing is that Rose's large mammaries hold her dress in place and by the look of things those sweater puppies are trying to hang a slippery dress. Her hips are doing a far better job at holding that thing. Then there's her hair.

The scarf covers up her breasts nicely, but the skirt would require her last button to be removable for posing and the torso would require engineering to have necks like Playmates figures or a neck peg like S7 Alice... for Rose's hair to be doable. Should I mention the bendy scarf?

Rose will be a pain and may end up as a deluxe figure.

Won't ask for these lest I get called a perv.

We're all pervs in here...

No, really, we are. I just motorbo-

Shut up! Shut up! Shut up! I don't need to hear your sexcapades.

As I was saying, the biggest challenge in Alpha is making Rose.

Now let's tackle the others:

The Final Fight 4:

Sodom, Rolento, Guy, Cody:

All of these would be new sculpts:

Other than guy, all of these should be Deluxe releases:

Sodom:

Hat and cloak from intro

Non c-grip hands

Slash effects

2 jitte

2 katana

Fan

Rolento:

2 heads

Non C-grip hands

Staff

Twirling staff

Grenade

Slash effects

Knife

That's not counting El Gado.

Guy:

Alternate head

Fists

Ninja 2 finger pose

Kick effect

Or Violent Ken Barrels

Cody:

Cuffs (open and closed)

Alternate head (taunted or run away win pose)

C-grips)

Stone

Tornado 

Knife 

Not counting Edi E.

Maybe something easier:

Dolls:

Here Jada can make a 2-in-1 by making Juni and Juli. Since they're identical from the neck down and that includes color palette. 

The Schoolgirls:

Making Sakura gives you the Torso, upper arms and skirt for Karin. But I would go with Karon first, as she's never had a release in 1/12 scale. Also, there isn't THAT much going on with her.

Open palms

Alternate head (scream or taunt)

Hand effects

Sakura would require a Hadoken with stand, alternate head, hadoken hands. If we're lucky a finger point taunt hand.

 Gen would require a soft goods robe for better posing and making some of his moves... His hands would be his main accessory for both mantis and crane modes.

Adon:

Similar to Sagat in hands, but with Jaguar kick effect being his only effect piece.

Birdie:

Alternate head preferably the tongue one

Real chain

Knife

Alternate hands

Mika:

Alternate head and hands

Killer Bee:

She isn't with the Dolls, because she's different and would be a redo of SFII Cammy's accessories with the addition of a soft goods coat for the intro.

Now if we add the Double Upper extras like Eagle, Yun, Ingrid, and Maki... that would be interesting...

But I'm sticking to vanilla.

Using a RNG, I got the following characters:

Rose, Gen, and Rolento. Not exactly my top picks but those are the ones the RNG chose. 

There are 15 Unique characters. Plenty of stuff to pull out from. After Alpha, if they want to go jumping around other games.,  they can.