If you have ever played the grifball playlist, you know that it is fun to play. To me, I think that there are two problems with it. The first problem I have is that standard grifball is voted for way too much. STANDARD GRIFBALL IS BORING. The maps and game types that have armor abilities is WAY more fun than not having armor abilities. Blargeball is perfectly fine, no problems there.
The second problem I have is betrayals. Some people who play grifball are just completely careless about who they strike with the hammer. Also it gets really annoying to get the bomb and have someone deliberately betray you for the bomb.
I believe that the next update should have these two changes. They are remove friendly fire and remove vanilla grifball.