So you want all the advantages of the Pale Master PrE without any of the disadvantages? Not only does Pale Master have the capacity to self-heal, it also has immunities and stat increases. Of course it has disadvantages. Any sensible developer would implement one.
Also as for being one/two-shotted, you should learn when to use and not use your forms. Even if you can dodge the light damage or kill the enemies before they can use it, there are going to be situations when you cannot get away with staying in a form where nobody but yourself can heal you.
Also for those who actually have done this, please don't dump your HP. You can somewhat dump CON and end up with a decent HP still, but I wouldn't recommend that either. I also don't recommend Drow. As much as I dislike running a warforged, losing 1 DC for essentially 4 CON (6 with enhancements which also unlock more Toughness enhancements) is well worth not getting killed quickly. Remember, your DCs are worthless when you are dead.