Why not release reprints of 100 Years War, Scottish Wars, Goblin Marauders, etc.?
I'm a big fan of Fantasy Flight Games. As a rule, the components are very high quality, the rulesets are refined (and revised when needed) and the company supports its big games with regularly updated online faqs, downloadable rules and expansions. FFG's purchase of Battlelore was a smart move on their part as Days of Wonder had developed a solid fan base for the game and had several nearly completed expansions almost ready for release.
As an impatient and greedy gamer, I would have been ecstatic if FFG had released all the expansions at once - Heroes, Dragons, Creatures, oh my! However, from a business perspective, I understand why flooding the market all at once would be a bad idea. Even the most ardent fans of Battlelore might not run out and buy all the expansions at once (I would, but I suffer from extreme gamer OCD) and gaming store owners don't particularly like to have product collect dust on their shelves. Moreover, if multiple expansions were released around the same time, one or more might get lost in the shuffle. Every game (i.e., "product") has to create revenue to cover its production run costs as well as the previously-incurred costs of research and development. Ultimately, FFG is a business that exists to make a profit. I understand this.
All that being said, I don't think the foregoing concerns apply to or in any way justify FFG's failure to reprint expansions previously released by DoW. R&D costs don't need to be recovered (they were incurred by DoW). The molds (presumably) were bought by FFG and are just waiting for injections of plastic. There is no risk of any of the expansions getting lost in the shuffle as they are known entities. Battlelore players know what is added by the Goblin Marauders expansion; they know how the Hundred Years War expansion fits into the existing scheme; they also know that they WANT THEM NOW! FFG has a ready market of Battlelore fans who recently bought the base game and are more than ready to add new troops to their armies. Spend five minutes browsing the forums and this fact becomes readily apparent.
The Battlelore Heroes expansion is a risk for FFG. It represents a fairly dramatic addition to the existing ruleset and may not appeal to all players (see also Call to Arms, Epic and that Troll thing). Proceeding cautiously with that type of expansion makes sense. Let it catch one...then, a few months later, drop Dragons...then Creatures, etc. As for the DoW expansion, RELEASE THEM AND THEY WILL COME! We - the Battlelore fans - have done our part: the demand is here. Now, FFG, it's time to do your part - provide the supply. Please.