Nah I think the current setup is fine. Like Kyle says at the start of the season there are 3 points avaliable from every match.
If you start giving 3 points to winners of OT matches and 1 point to OT losers than those matches are now worth 4. Meaning there are now extra points in the competition.
You have won the game if you win in OT, but the other team matched you to 60 minutes of hockey. And the OT is just an artificial way to force a result, in days of Yore you would have only been awarded a single point each for the draw. (presuming wins were worth 2)