^^Agreed. Moffat said that having the Eight Doctor fighting the Time War would go against McGann's portrayal of him in the TV movie, but IMO seeing the Eighth Doctor become a jaded war veteran does a better job of showing that war can change people than the rather "going to war, got to turn into a new guy" does.
To further show the redundancy of the War Doctor, Moffat said they wanted him to be a "half-way" Doctor, taking on aspect of the classic and modern Doctors. But that's essentially what the Eight Doctor already is. He isn't quite a modern Doctor, but he's too recent to properly belong among the classic era, too.
McGann could have been inserted into DotD in place of the War Doctor without the need to change a damn thing. Even the spontaneous regeneration could have stayed. And McGann's look for Night of the Doctor could have very easily worked for an Eight Doctor fighting the Time War.
To further show the redundancy of the War Doctor, Moffat said they wanted him to be a "half-way" Doctor, taking on aspect of the classic and modern Doctors. But that's essentially what the Eight Doctor already is. He isn't quite a modern Doctor, but he's too recent to properly belong among the classic era, too.
McGann could have been inserted into DotD in place of the War Doctor without the need to change a damn thing. Even the spontaneous regeneration could have stayed. And McGann's look for Night of the Doctor could have very easily worked for an Eight Doctor fighting the Time War.