The Imprezas are doing well despite the smaller Peugeots and Fords' cars advantage in manuverability. I bet ya if Toyota were still racing their Corolla, things would be a lot different.
In all of the gravel events, the Imprezas were in the top 3 leader boards until the car had mechanical problems or crashed which benefitted the Peugeots and Fords. On the tarmac events, Burns is not a tarmac specialist, Jean Joseph is still new to Subaru as well as Petter Solberg. And remember, Panizzi and Delacour are tarmac specialists. The Subarus did well enough on tarmac until Burns crashed it on this event though at the Corsica rally, the smaller cars really shined through with their advantage in shorter, wider dimensions on the twisty tarmacs. Ford and Peugeot kicked the rear ends of Subaru and Mitsus.
The current WRC Impreza is already using the "new" engine of the upcoming Impreza. They introduced it at the Argentina Rally, I think. They were just using the old body shell. So next year's Impreza will be the same inside, just a stiffer new shell on the outside is about all the change we'll see.
What we need is to get hired guns like what Subaru did in 1997. Keep Burns as the lead driver, but hire specialists for the tarmac and snow events. In that year, Subaru hired Liatti for the tarmac events(which he won a few and placed no less than 2nd) and hired Kenneth Erikson for the snow(where he won the first round and placed 2nd in the next). Those were crucial manufacturer's points for Subaru. McRae lost by only one point to Makinenen that year.
Next year, we'll have a more "Impreza experienced" snow specialist like Petter Solberg and tarmac specilist like Jean-Joseph(if Subaru keeps him). Burns will still be a contender along with Gronholm.