Mary is not optional…
God is infinite. God is eternal. God is perfect. God alone is God.
God replied to Moses: I am who I am. Then he added: This is what you will tell the Israelites: I AM has sent me to you. (Exodus 3:14)
Man is finite. Man is not perfect. Man is held in existence by God, but man is not God.
***But by the grace of God I am what I am, *(1 Corinthians 15:10)
Man sinned, and God devised a plan for our salvation. God alone truly knows what’s good for us. God alone truly knows what is best for us, and he always gives us what is best for us. We can reject what’s best for us, and even reject what’s good for us, but God’s plan for our salvation is good for us. The plan God came up with for our salvation is the best possible plan. It is the perfect plan. We know that God’s plan for our salvation is best because it came from God. God is God, and whatever God does for us, and whatever God plans for us, is what is best for us. God’s plan is the perfect plan because it came from God.
For I know the plans I have for you, says the LORD, plans for welfare and not for evil, to give you a future and a hope. (Jerimiah 29:2)
This isn’t made up. This is part of the faith - de fides - of the faith - given to us by God. God willed Mary’s role in the redemption of mankind and willed Mary’s role in his plan for the salvation of souls. Mary’s role in God’s plan is part of the deposit of faith, revealed truth about what God does. It isn’t extra, like ketchup on french fries, bolted on like an aluminum spoiler on the back of a '99 Honda Civic, or optional like power windows and a sunroof. Whatever Mary’s role in redemption and in salvation is, it is integral to our faith. God willed it. God said so.
The communion of saints is part of God’s plan. The Eucharist is part of God’s plan. The Holy Father as Vicar of Christ on earth is part of God’s plan. Confession is part of God’s plan. Worship, thanksgiving, praise, humility, the passion, death and ressurection of Christ, the beatific vision and the ressurection of the dead are part of God’s plan. Mary is part of God’s plan. God’s plan is perfect. God’s plan is not optional.
God had limited possibilities. He included Mary in the plan of salvation. If there were a better and more beautiful plan then God would have given it to us.