Double Dragon top wanted figures vs possible Wave 2:

 These are based on the Arcade game, so I need to look at the Arcade Sprites. I want a NES Abobo...

OK let's talk theoretical Wave 2:

Wave 2, Three figures... well 2 Figures because I'm betting Jeff has a guaranteed Spot, since he's a Repaint of the Lee Brothers with a new head.

Now who else could join this wave:

Williams/Roper:

They could be made with parts from the Lee bros. New heads are obvious. Newlower legs, forearms would be shared amongst the two. Roper would require a shirtless torso and reuse the Lee bros. vest. Williams would reuse the Lee torso sans vest.

So The Most likely Wave 2 would star:

Jeff

Williams

Roper

Since they're the parts reuse bunch. But IF we have a surprise character instead of going full obvious reuse, it would be between Abobo or Linda.

Buuuuuuuut the curveball with Abobo could be either Jick, the Dark skinned Abobo with a Mohawk and glasses? Or Mibobo the Mi(dori A)bobo... aka Greenbobo.

But for the longevity of the waves: Here's how I'd do it:

Wave 2:

Jeff

Linda

Jick

Honestly, my most wanted characters are:

Linda

Marian she needs her panty flashing skirt for Arcade accuracy.

Abobo

Williams (for ab punching Marian) shit I need to get Willy, Jeff, and Roper... that's almost the entire roster. Fuck!

At least the original Double Dragon is a small line. Now, if they expand to other games, that might be Problematic. 

Oí, Macaluso! Can we get a full roster this time? I remember SOTA. How we missed out on Dee Jay...