I'd like to see the following (in order):
1. Character/Rules Expansion
The Dragon Warriors game is a bit old, and in some ways it's showing it's age, and is probably ripe for a new edition. But, in order to do that, I understand the publisher needs to make the game viable first, so this is how I'd do it. I'd basically provide add-on packages to the existing rules, which would then later form the basis for a second edition - eventually.
The Character Expansion would give more options to the player. Here you'd see more character classes, rules on running non-human races (optional), more equipment, and expanded background tables (for backstory and equipment). Maybe include some stuff from the wiki and from the Ordo Draconis magazine, if possible.
The Rules Expansion would give more rules options, obviously. This might provide a skill system usable by all character classes to expand their abilities, and the changes that it would bring to the existing character classes. A magic system or actually several to chose from that's different from the standard. Expanded combat rules, more magical items, etc.
2. The World of Legend Campaign Setting
This book would show more of the map (maybe include a poster map - or at least make one available separately), especially the places mentioned in the book but that are currently unseen. It would include expanded information for all areas of the world.
3. Campaign Region Expansions
These would take one country or region and expand the information even further, as well as include at least one local adventure.
4. Misc.
Like the Friends and Foes book here, there could even be a part 2 to that series. Some options:
-Magic Items - comes with a complete history, adventure seeds, and covers one category of items, so you'd have a book of Rings, Weapons, Scrolls, Armor, etc.
-Lore Books - Like chapter 15, would focus on one piece of lore and give adventure seeds on how to use it
-Monster Books - Many full blown drawing of the monster, histories, variants, tactics in combat, and a full blown adventure showcasing the monster in detail.
5. Campaign Modules
Basically, more of "The Sleeping Gods", because that is so cool to have a whole campaign in a book like that, IMHO.
1, 2 and 3 should be some larger, hardcover books, while the rest can be smaller, cheaper, softcover books - as they'll see less use.
Anyway, I just bought all the books and have read a few so far. I really like this game and I hope it survives, though I'm a bit worried at this point that it won't. IMHO, this is what D&D should have been since the beginning. Sure, like I said, it's growing old and has a few warts, but it's still a great system and an even better game world.