I realize there's no scripter, but to address the dragon (for instance) issue, I'd venture to say that old school not be breedable at all, but that this is something which would be brought in new, and dealt with as a whole new concept. That way the old school can retain their niftiness and it would give owners/tamers something new to work at, with dragons that could be tamed up to the stats of old school style. But like you said, it's all simply theory.