If they do introduce best ball I would like to see them have 2 options of play. 1 normal best ball where you chose your teams best ball as normally. But I would also like to see best ball bloodford. In that format your opponents chose which ball you get to play so in essence it would be worse ball. That format makes makes for some interesting matches.
My other thought would be stroke play tournaments with either 2 or 4 man teams playing stroke play best ball. I'm not sure if it would work here the way WGT is set up for tournament entries. I would be fun it it could work.