The biggest rule change in 2015 in the CFL was the moving back the ball to the 25 yard line for extra point attempts, which is a 32 yard field goal attempt. The Cats kicker Justin Medlock is one of the better kickers in the league, especially at longer distances. Having a better kicker means the rule change is a good one for the Cats in 2015.
Medlock has made seven of seven attempts at extra points through two games, including five alone last Friday in Winnipeg. After two games, the Cats look to have the best offense in the CFL, which normally would mean the Cats should consider going for two from the three yard line, especially if they can succeed more than 50% of the time. However with Medlock's success, the Cats probably aren't going to go for two unless they really need it at the end.