This is how I think it should be
45 teams divided in
1st Qualifying Round
Worst 4 teams in a group stage and the top team goes through.
2nd Qualifying Round
42 teams in 7 groups of 6 the top 2 teams qualify
Play-off Round
The highest 3rd ranked team automatically qualifies but the other 6 teams play in a two-legged series and the three winning teams qualify
Invited Teams
Invite teams like New Zealand (OFC) and the asian teams in UEFA like Kazakstan, Georgia, Turkey and Israel (UEFA), like Mexico when they get invited into the Copa America.