Like we could sit here and break down the exact memory requirements you think would be "reasonable" but the truth is I don't care what you think is reasonable because it is going to be purely theoretical and your entire approach goes against how the cost of these systems scale anyways, as well as the major cost sinks in this space.
Instead put the focus where it should be: The cost of the systems today is too high for small groups to run. It needs to be improved.