The oppositional nature of God in relation to man is speculative.
Saints pray to God with us. That is what we ask them to do. The patterns is in 1st Timothy 2:1, that you recently brought up.
Perhaps some of the prayers are as you describe (which have their own problems) but we've posted hundreds of them, many tonight, which show Roman Catholics praying to Mary for specific requests in the hope that SHE will fulfill the request herself ("her clemency") - all of which should be addressed to God alone.
They asked living men and women to pray for them , there is not one shred of evidence that the saints in heaven are omnipresent and can hear all the prayers of all the people over the entire world... what they pray for is judgement on men
Prayers TO MARY
Here is one I can still recite from memory
The "Memorare" is a sixteenth-century version of a fifteenth-century prayer that began "Ad sanctitatis tuae pedes, dulcissima Virgo Maria." Claude Bernard (1588-1641) popularized the idea that the "Memorare" was written by Saint Bernard.
Remember, most loving Virgin Mary,
never was it heard
that anyone who turned to you for help
was left unaided.
Inspired by this confidence,
though burdened by my sins,
I run to your protection
for you are my mother.
Mother of the Word of God,
do not despise my words of pleading
but be merciful and hear my prayer.
Amen.
Act of Oblation to the Blessed Virgin Mary
My Queen! my Mother!
I give thee all myself, and,
to show my devotion to thee,
I consecrate to thee my eyes,
my ears, my mouth, my heart, my entire self.
Wherefore, O loving Mother,
as I am thine own,
keep me, defend me,
as thy property and possession.
Just to make a point that there are many prayers to Mary are not asking her intercession with Christ