It just occured to me that this splitting of the WRX and Impreza into separate models doesnt mean that the Impreza wont be offered in STi trim.
I have a feeling we will see the following in the coming months/years:
So you folks who want 300+ hp and 4-5 door practicality get your cake and eat it too with Impreza STi.
and folks who want a true competitor can get a WRX STi for light weight, small yet powerful, 2/3 awd sports monster.
Subaru squeezes out the awesome juice from the Impreza WRX STi and pour it into a concentrated little cup for the true rally-race diehards in the form of a new small 2/3 door.
As the old saying goes, "3 doors or less, awesome success! 4 doors or more, GROCERY STORE!"