This is pure speculation:
I believe that if they Incarnate is placed into the game it will allow the elite players who unlock the EAT to construct thier own specific, and completely customized archtype.
For instance, it was stated that States is a Tanker incarnate, but he has an incredible damage output. In terms of an Incarnate you will choose your primary power pool, Statesman would have been an Inv. Tank. In his secondary pool he was allowed to take any kind of other primary or secondary pool, so for his secondary pool Mr. Emmert took the Martial Arts Scrapper pool. So he would be a tank with a scrapper secondary allowing him to not only be an incredible damage sponge, but also dish out pain in close quarters combat.
My backing for this was that in the original version of the game you were to be allowed to take your pick out of any two power pools in the game. This idea was trashed because it made it too easy for the novice to make a gimp archtype that couldn't support itself (think of a greenhorn making a Force Field/Invulnerablity Tank) and too easy for an experianced player to make a God (something like a Fire Tank/Fire Controller). This idea of CoH has always inspired ideas of uber-builds in my head and I think that the idea could not have gone totally into the waste-basket.
This is just my speculation though.
(Fire Control/Fire Blast) Think about it....
