Burn all of the dragons and their eggs, who cares. I didn’t even find the rivalry between those two dragon dudes (red one I think, while leveling) very compelling, and I can’t even remember their names. Ditch dragon-riding too. It was fun for a day or two before I pined for my damn summonable flying mount instead of waiting for recharging circles.
Keep the talent trees, though. They are pretty cool. Put us back in the original setting somewhere- Kalimdor or wherever. Fix crafting so it is not just more intuitive, but also fun and not gated so much.
Actually, the return of talent trees is the highlight of DF. Dang.