DW?
Edit: oh, dragonwrought. Wasn't familiar with the acronym. I've seen worse than that (We do have Unseelie Draconic Magic-Blooded Fire Cast Dromite craziness in Valua and a Symbiotic Rime Sprite/Human in Yafutoma, after all).
Geez. We got enough templates there, man?
OK. If that is what is going to happen, then I will go all out nuts.
One thing, though. Don't know how weird this is or if it is even legal, but:
Anyone noticed Incarnate Construct?
-2 LA, and 2 stats (Con & Int) that you get to roll when you apply it...
Spend you PB on the other 4 stats, roll Con and Int, then tack on any number of templates that will send you back to LA +0 again (or more if you are that way inclined).
Of course, finding a construct you can put that on is going to be difficult.
Also:
I am not getting it. How is dual casters going to give you any more than the normal caster levels and stuff?
For example:
Druid 10//Wizard 10 = CL 10 in both, ECL 10
Druid 4//Wizard 4 / Arcane Heirophant 6 = CL 10 in both, ECL 10
Am I missing something here?