I hate Kara Sloan's pose! She's supposed to be an elite sniper with a 6' rifle, and she's holding it straight up! Why? It's just so awkward and it makes her look like she'll fall over or drop the gun. Sloan should be resculpted to be looking down her scope (like her artwork) or at least holding it more realistically.
I'd love to see a resculpt of Siege that reflects the fact that his cannon is his primary weapon, not his hammer. Also, his current pose is too static. It should be more aggressive and intimidating, like Maxwell Finn's.
There should be two different sculpts for every solo with FA:2. My wife pointed this out to me after she got two Warwitch Sirens and was disappointed that there's only one sculpt for them, because she likes running them in pairs much like her Pistol Wraiths. Everyone loves alternate sculpts for FA:2+ solos, so it makes sense to offer them consistently. I know I'd buy a second GMCA if they made a girl one.
Extreme Stormclad. Make it so.