I can't believe no one's commented on these!
I've waited since the '90's for Jaina and Jacen figures. It will be awesome to finally be able to add them to my collection. I'll likely by 6 or more multiples of each of them.
Jacen looks to be dressed in his early Young Jedi Knights threads (similar to Luke Bespin's) but comes with the Yuuzhan Vong "Embrace of Pain" - I think that's what the twisted amphistaff is supposed to represent. Anyway, with that removed, I'm sure he can be YJK Jacen (perhaps older looking) and NJO Jacen.
Another good Jedi form for Jacen would be the black outfit. You can customize this with Jacen's head and the Luke Rebel Alliance Special Ops outfit from the Deena Shan comic 2-pack.
Sith Lord Darth Caedus would also be welcome for Jacen.
Jaina's outfit is rather too prequel-Jedi for me. I would have preferred her in the black or the Bespin-style jumpsuit myself. This could be done with the Leia Bespin-escape body But a tan repaint would be better, adding Jaina's toolbelt and a hook for her lightsaber. The Deena Shan body would work for her black outfit.
The female X-wing Pilot body is already in play out there multiple times. Making Jaina from Rogue Squadron would be easy.
I really want to see some carded generic Yuuzhan Vong (or a battlepack), Lowbacca, Tenel Ka (perhaps with removeable arm), Zekk, Danni Quee, Jagged Fel, a civilian-dressed Baron Soontir Fel, older Han Solo, older Princess Leia, a carded Luke Jedi Master, a Mara Skywalker Jedi Knight, Kyp Durron, a Jedi Corran Horn, some Yuuzhan Vong warmasters like Tsavong Lah and Special Agents like Nom Anor, Droma, Booster Terrek, the list goes on and on...
These would sell however. Many are OT-era Jedi Knights or otherwise antagonists.