Given Porsche's iconic nature, similar to Ferrari, one would think it would not be overly VW-ized if it becomes an operating division.  VW has done amazing things with Audi.  But VW is a volume car producer and their ability (VW and others that is) to restrain the number of cars produced and guard exclusivity is not consistent.  Porsche has arguably been heading down that road anyway, but there is a big difference between the expansion into SUVs and a high-performance balloon, er... saloon, versus very broadly based common platforms, which is the cost/capital saving regime of choice at VW and most volume producers.   There are propensities to platform-share, so one could easily imagine Audi's and VW's built on the 911-Boxster platform.  Not good.                            

At least based on the commentary implying savings down to the last pfennig (often companies verging on a BK sound like this, read the last missives of Lehman Bros or Worldcom and they sound unfortunately similar -  talking about savings at the smallest levels - like that would somehow ameliorate massive overleverage), this situation will come to a head fairly soon.  Were it to somehow drag on it may effect Porsche development years down the line, as many projects will surely be curtained or scuttled to save those pennies.