i'd probably ignore the 'complete psion' errata. give it a few games and if it seems that it would've been a better thing to be included - because he's overshadowing the rest of the group - maybe reintroduce it?
my reasoning would be, from our own campaign, that yes, the psion is powerful and has some awesome "no SR" powers, however, by the time he can augment the power up to 9 power points, he's probably in dire need of that manner of damage, as the party relies upon him as the artillery.
additionally, one well-built, charging melee-machine that gets past the defensemen (knights, fighters, crusaders) with the right feats can easily drop him in a round or two, as psions aren't that sturdy, unless they spend their time buffing, which is less time blasting or area-effecting or controlling.