Why not test the rules in this league? Imo experimenting is good, if the new rules suck they won't make it to mlb.
The stealing first rule might not be terrible either as you can only steal on a dropped pitch or passed ball so it won't happen a ton. The rule would give catchers some importance back they lost with the robo ump.
In youth ball this rule would be terrible but in pro ball maybe 2-3 wild pitches or passed balls per game happen so the effect wouldn't be huge.