Actually what I want to see isn't listed in any of those. There are basically 2 things that have never been touched on which I find absolutely amazing that they've left out:
1) The later battle of the New Republic vs. The Empire. Yes, we get Thrawn, Zinji and Daala, and then...er...how did the Empire get pushed back to that tiny rim?
The later Bantum books all focus on various threats that only really involve the Big 3 or non-imperial battles - Yvethan, Hether, Thraken, Waru, Kuller, Darksaber, Nam Chrorios (SP?).
The only one that sort of touches on NR vs. Imp is Starfighters of Adumar. What were Ackbar and Pellaeon up to out on the Northern Galactic Rim battling out for those last systems in the last 5-10 years of the war. You can debate that a bunch of planets defected peacefully, but there has to be some sort of battles for Imperially-loyal systems. This is a massive hole that really leaves the galactic civil war quite unfinished IMHO.
2) filling the gaps between NJO, DN and LOTF. There's a full 10 years that have NOTHING - 7 between The Unifying force and Dark nest ,and another 4 between The Swarm War and LOTF.
I'm sorry, but there's so many details there that need to be covered. Rebuilding, the last of the vong holdouts (you KNOW they didn't all surrender), how the Empire increased its terroritory between then and LOTF, the rebuilding of coruscant and spreading of teh jedi order to have outposts on different plannets, the spice/drug trade the jedi were investigating at the beginning of Dark Nest....
Massive holes there. I'd prefer these to be filled in before we move on to anything new.
To respond to the offered choices:
The Old Republic era - sure. We've got a start, lets see more. Though I'd prefer something that was NOT focused on a Jedi vs. sith war with the sith taking over the galaxy. Something smaller would be nice. Also would like to see something about the Rakata, but the new Dawn of the Jedi comics may involve that too
Classic trilogy era - as long as it has absolutely NOTHING to do with the Big 3, or Vader. There are more than enough about them. What I'd REALLY like to see from this era is a series of "battlefront" novels detailing the battles between the Rebs and Imps told from the perspective of the ground troops. Possibly with character squads drawing one from each class in the game(s).
Story set between Ep III and IV -Given the time limits on them right now, not a whole lot of point. In a few years when they can hit up any year, sure.
A Jaden Korr trilogy - two was enough. Forgive me but Kemps writing is too convoluted for me in many cases. Now a Kyle Katarn trilogy...
A Talon Karrde trilogy - little to no interest if it just focuses just on him. One book on him, one on booster, and one on Cadaras though would sell me for sure
A Corran Horn story set in his Corsec days - sure. Always wondered about this.
A story focusing on the Chiss and the Unknown Regions - **** YES!! Preferably multiples
Another Yuzzhan Vong story - see my above section on post war. I think the war itself was covered well enough
A Bib Fortuna story set after ROTJ. What happened to him? - he actually appeared in one of the comics. X-wing I think? Not a whole novel, but a side mention would be good.
Story set after the Legacy Comics - NO NO NO NO NO NO NO NO!!! Untill we catch up I think this is a horrible idea.