A tiny minority complaining can be very loud if they are the only ones speaking.DL is for all intents and purposes a dormant IP right now. And WOTC did the survey - they have far more new players than old ones now with the D&D pop-culture boom.
WOTC can do what it wants to DragonLance, and only a tiny minority will complain.
The only D&D players that are going to care much about Dragonlance are older gamers, or new players who are specifically interested in the old content. So WotC doesn't really have any reason to do anything with Dragonlance unless they're trying to appeal to fans of the classic setting, and then hopefully have those fans excitement rub off on newer players.