I have a question about mafia.

Does the mafia members stat's play any role in changing mine?

As in if I add a player of level 1 with 1 AP and 1 DEF. VS If i add a player of level 140 with 20k+AP and 20k+ DEF.

Would the level 140 add more to my attack and defence than the level 1?

And is there any point in ever having more than 500 Members in your mafia ?