I apologize if anyone has suggested this already... but would it be possible to give Dryads the gliding ability that dragon hatchlings have?
If I remember correctly the original argument for not allowing Dryads full flight was that they don't have to go through a rite of passage to obtain it. Well, hatchlings dont need a rite of passage to glide, so I think it would be fair enough to allow dryads to glide, too.
And if you're considering this idea, it would be nice if hatchlings wearing ghost and zombie costumes could glide also, after all adults and ancients in costume are able to fly. =)