Cheezy the Wiz
Socialist In A Hurry
This sounds like true idealism.
Words aren't toys. They have meaning. Either use them right or don't use them at all.
I guess that's the closest to 'I don't know' we can expect. So we can stop pretending now this is a Q & a thread. Honesty is a good thing after all.
For you, I will pretend that "I don't know" you are even here.
I am going to have to recapture and reformulate what you are saying here to me so that I can be certain to understand it:
The idea of the working class creating an economic / political system fundamentally different to those produced by capitalism and moreover a system adhering to the ideas of communism, can not be discussed in its potential actual realizations because those realizations would just be ideas, at this point, and hence pointless.
No, just specific details of the nature that Hygro asked about. I gave an answer above about what you can generally expect.
Why is such agency assumed?
I can't imagine:
Spoiler :

You may say due to the common interests of the working class, unifying it and enabling it to more or less act as one person/agent (hence: agency). But as soon as the working class has more or less abolished other classes and there is only one class left, why is it assumed that such agency persist beyond the stage of class struggle?
It's material interest. They can't help it, their consciousness is shaped by it.
Or do you think that people who were once enslaved are at risk of being re-enslaved once slavery is abolished?
One of the markers of communism is the abolition of structures that enable oppression in the first place, primarily private property. It won't matter if individuals "just up and decide" to acquire wealth - there will be no basis for capitalizing it or passing it on to other people or other generations. It's not kept going by good feelings and happy thoughts and honest dealing, you know.