With all due respect, a loaded question IMO. But I'll answer anyway: I don't believe Mary has usurped any authority of Jesus, now, or ever.
If I did, I would have to leave the CC. The next best Church after the Catholic is the Orthodox IMO, so, even if one could demonstrate that "[at some point] the adoration of Mary changed into her taking on some of the role Jesus told us was His", then such an opponent wouldn't gain much (in terms of making me leave an apostolic Church).
Now, hasn't it been said that there is NO OTHER CHURCH other than the Catholic Church? Yet, there is a next best?
Sounds suspiciously close to Mars Hill to me.
May I introduce you to the UNKNOWN GOD?
Acts 17:22 Then Paul stood in the midst of Mars' hill, and said, Ye men of Athens, I perceive that in all things ye are too superstitious.
23 For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him declare I unto you.
In Christ...Alone!
They all seem to be loaded when we are trying to point out the others error.
The next best Church after the Catholic is the Orthodox IMO, so, even if one could demonstrate that "[at some point] the adoration of Mary changed into her taking on some of the role Jesus told us was His", then such an opponent wouldn't gain much (in terms of making me leave an apostolic Church).
It's interesting because your two churches share a historic lineage, but the EO are nowhere near as expansive in their adoration of Mary.
I'm in and out so I'm not sure how quickly I can respond.