FrankTrollman said:That Breath Weapon is completely useless at ECL 12 - that you are still "paying for it" is absurd. That Natural Armor is completely useless around ECL 14 - that you are still "paying for it" is absurd.
And so on. Heck, noone gives a damn about Charm Person at 12th level - even people who know it are using Charm Monster on people because it has a better Save DC. The Half Dragon's abilities scale down as they grow in level and approach zero as character level approaches 17. The Half Dragon's loss of hit dice is always a crippling cost at all levels (although I think it stings most at levels below six where you are losing more than half of your hit dice and levels above 8 where you are giving up prestige class levels).
-Frank
You really like hyperbole, don't you?
An Amulet of Natural armor +4 represents over 20% of a 14th level character's standard wealth, and between the need for a +3 or +4 weapon, decent armor and shield, stat boosting items, a cloak of protection, and a ring of protection (which is much more useful than an Amulet of Natural armor, for the same cost, since it adds to touch AC), and preferably an item or two to let you fly and see in the dark, there's no way you'll be able to find the 32,000 gold to spend on 4 points of natural armor. The +4 natural armor doesn't even begin to lose usefulness in 3.0 until 16th or 17th level, and in 3.5 it never does because it stacks with an amulet.
Charm Person? Hardly the #1 fear of all fighters. If you could replace it with Hold Monster, you might have a point, but as the half-dragon is immune to paralysis...
Breath weapon useless at level 12? Where did you pull that number from (and do I really want to know the answer)?
Hit point loss? It's huge at low levels, but hardly anyone starts one at 1st level, and at the levels you're talking about, a difference of 20-odd hit points is practically irrelevant.