Here is my take on it, whether it makes sense to you or not it’s the best I can do right now.
In the early church, ‘development’ was driven by the heretics. It was this tendency to want to micro define or explain everything that caused people to draw erroneous conclusions, and the church had to react.
This was always a ‘conservative’ move on the part of the church fathers, they were pruning away. Sometimes the easiest way to do that would be to positively affirm a doctrine that excludes any other interpretation, but it was always approached with reluctance, and minimally.
We know it happened, it is our history.
So in regards to Arius, the church affirmed that Jesus IS God. But they didn’t just figure this out, this was what they always believed! It is not a development that required a lot of logic to figure out, they simply had to look at the liturgical prayers and know they have always prayed to Jesus as God. This is why the first problem Arius had was with his own bishop. Arius was contradicting the belief his own bishop already held and prayed in the liturgy of his city.
But today in the western Catholic church there is a new mood, and atmosphere in place that makes it seem safe to speculate about things no one can know. I guess it’s that the old “God is on our side” mentality has got the best of them. People dream dreams and see visions that talk to them, and soon enough are joyfully advocating new dogmas be proclaimed by their infallible pontiff. They even engage in politicking for these new dogmas, sending postcards and petitions to the Vatican, and some Popes get caught up in it too, making unwise statements.
To quote Dr. Mark
Miravalle:
From that time to the present, great numbers of petitions have continued to flood the Holy See for the papal definition of Our Lady’s universal mediation. Petitions for a new Marian dogma from only the last ten years (approx. 1994-2004) number over six million from over 165 countries, and include over 550 bishops and 45 cardinals. (12) Although these numbers do not include the hundreds of bishop petitions, along with the multitudinous number of clergy and lay petitions submitted to the Holy See by Cardinals Mercier, (13) Gagnon, and others prelates from 1930 to 1994, the recent petition campaign of the last decade for this fifth Marian dogma represents the largest per annum petition drive in the history of the Church.
But the question of “why” must again be addressed. If the Magisterium already teaches the truth of Marian mediation in its three components of Co-redemptrix, Mediatrix, and Advocate, then where is the need for a solemn papal definition of the same truth in the form of a dogma?
Historic graces and world peace. **With every new Marian dogma proclaimed by the successor of Peter, bearer of the keys of the kingdom, a new ocean of graces descends upon the Church and the world. **For Our Lady to exercise fully the motherly roles granted her by God, humanity must exercise its free will in accepting her roles that they may be activated on our behalf.
The whole focus is wrong. Is there a tangible benefit to knowing more minutiae … are they essential to us? That implies that the early Christians were at a serious disadvantage. Can these new dogmas save us, or are they instruments of division?
Why now? Why not at Nicea in the fourth century, or at Jerusalem in the first? Originating in the west at least one might have expected these to show up at Arles, but no, no one discussed these things at Arles either. Those poor people didn’t know what they were missing!
I keep going back to Saint Vincent of Lerins, he said it so well. Whatever was believed everywhere from the beginning is dogma.
When Catholics met with Orthodox in the first few centuries of the schism there was a tendency to shock by insisting on certain dogmas (like purgatory) which the east had never heard of and others (like the filioque) which the east had already rejected (people say it originated in the east, which is true, in Persia, and it was quickly rejected there too which is rarely mentioned).
Frankly if the entire east had not heard of it or did not teach it (and the east is so notoriously conservative as it is), it cannot be something that was believed always and everywhere. It is new and is not then properly ‘Catholic’, certainly not Orthodox Catholic.