ActionFigs.com: Recently, Hasbro stated it was "less likely" that Aurra Sing would be updated with better articulation. Might Hasbro reconsider that position given the fact that she was a major villain in several comic series, and is an action-oriented character which thus merits a better-articulated figure? Aurra could go great in a comic pack with perhaps Sharad Hett, Ki-Adi-Mundi, Reess Kairn, Torgo Tahn, Senator Tikkes, Aayla Secura or even an updated Adi Gallia.
Hasbro: We don't rule out that someday we could update Aurra Sing, but she isn't high on our list right now given some of the other figures we have coming. The version of Aurra that we have right now (last released in 2006) is, we think, still a very solid figure and the need to update her isn't as pressing....at least for now. You'll see, too, why at least two of your choices would not be good ones, as they are both coming out in the same pack in late Spring 2009.
RS has rumor of a Hett/Mundi comic pack so this kinda might be a confirmation of that.