Jim Prentice
If Prentice never goes into politics, or at least doesn't make the jump to provincial politics in the wake of the Redford fiasco, then the Tory leadership MIGHT go to Tom Lukaszuk, a socially liberal Edmontonian with a street-tough image, even less sellable to rural and southern Alberta than Prentice turned out to be.
Or, someone else in the conservative political/business establishment might be cajoled into taking the PC leadership, and might have the good sense NOT to try to bribe(*) the main opposition party into folding into the governing party, or launch his campaign with a Nickelback song about getting drunk and violent, or make dumb comments about math during the debate. This possibly saves the dynasty for another four years.
(*) Get your libel-lawyers off speed dial, I realize no one was literally bribed.