For those unsure about mandatory defensive rules, these are the rules I use:
No Auto GL
Down: First Down, Second Down, Third Down, Fourth Down
Distance: 2 - 30 To Go
Location: Own 2 - Opp 0
Personnel: 1RB/2TE/2WR, 2RB/2TE/1WR, 3RB/1TE/1WR
Quarter: First Quarter, Second Quarter, Third Quarter, Fourth Quarter, Overtime
Time: 15:00 - 0:00
Score: Down 29+ - Up 29+
Personnel: Goal Line: 0%, Normal Defensive Backfield: 25%, Nickel: 25%, Dime: 25%, Quarter: 25%
Secondary: 1-Deep Man: 0%, 2-Deep Man: 17%, 3-Deep Zone: 0%, 4-Deep Zone: 17%, Corner Blitz: 17%, Safety Blitz: 17%, 2-Deep Zone: 17%, Man: 0%, 3-Deep Man: 0%, 4-Deep Man: 17%
Linebackers: Zone: 0%, Blitz 1: 33%, Blitz 2: 0%, Blitz 2+: 0%, Man: 33%, Zone In: 33%
Run/Pass: Run: 0%, Pass: 100%, Neutral: 0%
No Auto Nickel vs 3WR
Down: First Down, Second Down, Third Down, Fourth Down
Distance: Short, Medium, Long
Location: Own 0 - Opp 0
Personnel: 1RB/1TE/3WR, 2RB/3WR
Quarter: First Quarter, Second Quarter, Third Quarter, Fourth Quarter, Overtime
Time: 15:00 - 0:00
Score: Down 29+ - Up 29+
Personnel: Goal Line: 0%, Normal Defensive Backfield: 20%, Nickel: 40%, Dime: 20%, Quarter: 20%
Secondary: 1-Deep Man: 16%, 2-Deep Man: 16%, 3-Deep Zone: 5%, 4-Deep Zone: 5%, Corner Blitz: 8%, Safety Blitz: 8%, 2-Deep Zone: 8%, Man: 16%, 3-Deep Man: 5%, 4-Deep Man: 14%
Linebackers: Zone: 20%, Blitz 1: 20%, Blitz 2: 20%, Blitz 2+: 2%, Man: 20%, Zone In: 20%
Run/Pass: Run: 0%, Pass: 100%, Neutral: 0%
My diversity is not perfect, but I think I'm close to the wanted outcome (O 30+, D 20+) in nearly every match. I have to tweak a little bit to limit usage of plays to 5, but that is strongly dependent on AI coaches selection to counter opponent's game plan