How about a longer 4v4 OT before shootouts?
This. I've always felt that 5 minutes was too short of a period for any meaningful play flow to develop. 10 minutes of OT wouldn't be out of line especially if it was 4on4. Baseball games can go into extra innings that take far longer than an extra 10 minutes and they play those nigh on ever day and sometimes twice a day it seems like.