Open table. Alternate breaks. These are pros, trying to change the rules to handicap them and slow down run outs is futile. Rest assured that any game that can be won in a single inning WILL. They're supposed to run out. Might as well make them play with a jump cue the whole time or shoot opposite handed.
If you don't want to see run outs, don't play 8-ball, 9-ball, 10-ball, or allow the magic rack. Or impose a mandatory 1-safety per game rule.
On the other side of this coin, even if the rule is implemented (take what you make) - how many games would this really impact? In the last TAR match how many times did the breaker choose the other group?
-td