Character selection was probably the best ever in POTJ... OTC was a lot of redoing stuff that, today, sucked... Dagobah Luke, Lobot, etc... And of course the rehashes. The Cantina wave of POTC ranks up there as the best wave of figures in the basic line ever though... At least in the top 5.
THOSE figs are the type I'd like to see in the new line in 2006. Heavy on articulation, and obscurity galore... However, I'm also a huge fan of resculpting stuff... There's little from POTF2 that (unless it's already redone) I wouldn't redo. Nein Numb, Zuckuss, Piett, Endor Soldier, Hoth Soldier, Death Star Gunner, Tarkin... All on my resculpt list.
That's a fairly diverse lot in and of themselves though so they'd fit into a new line well, geared at collectors.
POTJ's line was great character selection though for sure. They even snuck in the main character EU designs which I actually liked.
And indeed, the astromechs, and the Imperial Officer, and FX-7 are all among my favorite figures in the line probably. I still buy those Impy's anytime I see them. I wish they'd re-release the Officer variants, or release them in grey uniforms even. That'd be a whole new army to build.