I'll phrase my predictions based on when I started to follow the WRC regularly around 2000 (though my number one is more early 90s).
1. Meeke in the Citroen is Sainz in the Celica. All the work finally pays off with a championship for a fast, deserving driver in a competitive year
2. Ogier in the Ford is McRae in the Ford. Big expectations, breakdown, breakdown, frustration, crash, breakdown but still ends up second or third in the championship
3. Latvala in the Toyota is Gardemeister in the Seat. Great on paper, some good stage results, but it doesn't translate to wins and can't get into contention for champion (FAIL)
4. Neuville in the Hyundai is Panizzi in the Peugeot. Very fast but only in ideal conditions so he's high in the championship but can't get enough points on gravel to be champion
5. Tanak in the Ford is Loix in the Lancer. "We have a second car. Some guy over there is driving it. Look over here; it's Makinen/Ogier!"
Special mention: Dani Sordo is Dani Sordo. Consistent points but will take a few calamities at the top of the leader board for him to get a win. Good overall points for the year, though. Enough to make Hyundai the manufacturers champion.