I would prefer to eliminate the 3x3 completely (& shootouts). If tied after 60 then play 5x5 for 5 minutes (what we used to do). 4x4 would be ok if you want more open ice since that happens during games, but 3x3 almost never occurs in regulation. The winner gets all the points, loser gets nothing. If it ends in tie then split the points. If you still want 3 points for the winner, then each team gets one point for a tie and no one gets the extra point. Might incentivize the teams to take chances and go for the win in OT.