What I find that I disagree about your position is that somehow you have imposed on scripture the idea that the office of Deacon and the Office of pastor are independent of one an other.
The two "offices" are not related other than both are occupied by members of the assembly believer's who have been given oversight and care of each other. (1 Cor 10:24)
The deacons are not elders and the elders are not deacons. At the first formation of the two, the only "oversight" was the assembly. The assembly appointed both, and the function was to the two basic needs of the assembly.
It is true that the first deacons were appointed so the apostles didn't have to spend time serving, but the apostles did not appoint the deacons, and the apostles expressed no oversight of the deacons. Such oversight is not expressed in Scriptures. (Acts 6)
And it follows that the deacons had no oversight of the elders. They did not function in the things of the elder body, and were not a part of that grouping, for they were not chosen to that appointment by the assembly.
I do not recall that pastors or bishopric were head of anything in the church. Paul uses the term "overseer" (one who guards and leads) in relationship to elders, but again, it is in the matter of the spiritual areas as shepherds, and not physical needs. (Acts 20)
As the church was brought into the gentile world, a corresponding development of hierarchy seemed to develop because (imo) the need for organization and meeting houses replaced the earliest church example of communal cooperation. The larger the assembly house, the more centralized the government of the assembly.
I am not a communist in the sense of the USSR - Lenin/Marks ungodly scheme. However, I am most certain that worldly distractions have been a tool of the enemy of believers, be it in the home, in the assembly buildings, in the worship, in the fellowship.
Huge amounts of support are generated as "offerings to the Lord" for what will ultimately be burned up. So that folks will appear attractive to this world, conform to this world's standard, and not appear as strange or foolish to the world. If the Lord did not have even a pillow to lay His head, why do the assembly have to have padded chairs to sit their butts?
The assembly is made up of believer/ priests having access individually to the high priest (Christ). There is supposedly not hierarchical structure of leadership in the early church other than assembly and apostles. The apostles (later elders) were over the spiritual aspects, and the assembly was to appoint deacons over the physical aspects and later appoint the elders (for there are no apostles) over the dissemination, teaching, and learning of the Scriptures.