No criminal Democrats are going to prison because nobody in the DOJ will prosecute them to the benefit of Donald J. Trump. That is as sure beltway career ender as there is. It’s been 15 months since McCabe was referred for non coup related prosecution. And what has happened? Nothing.
McCabe was fired from his position in a very timely manner; he has lost his pension and any chance of ever working in law enforcement again. (I don’t recall any accusations of foot-dragging by the Justice Department when that happened.)
The problem with prosecuting him before any others is that the prosecution would have to present evidence that may jeopardize any or all of their open investigations. From the looks of how this may shake out, McCabe may be one if the smaller fish.
We’re in that part of the timeline where evidence of wrongdoing is becoming clearer but we’re not yet at that point where it’s obvious to all.