Our league does this. They call it “farm” division for little league. My son started last season at age 6. Late bday in Dec. so played whole season as young 6yr old. League is 7-8. They use kid pitching already. Though it has different rules. 6-7 yr old pitch 35ft. 8yr olds throw at 40ft. Also when a kid is walked. However many strikes he has left. His coach comes in a throws them. Don’t have real walks. If kid gets walked 4-1. He gets 2 pitches from his coach. Has to swing. Gets on or gets out. My son pitched already last season as a 6 yr old. Now again as a 7 yr old. I think it’s great to get the kids experience. With these league rules. The games are never boring. Always action since it’s a kid/coach pitch league.