Putting big name administration officials in prison isn’t going to be easy and they will only get one shot at it. There can be no mistakes or misfires.
The conspirators surely will have paid attention to the Watergate prosecutions and will have worked at limiting loose ends. With Nixon you had a hostile press eager to ruin him. This time you have a media eager to help the conspiracy. And loyalists of Obama and Never Trump Republicans who will obstruct the prosecution.
I often wonder how the hell we've come to this. Our elected "representatives" are some sort of elites who it would be almost unthinkable to hold to account. They vote themselves pay raises and lavish benefits from the public treasury and pass laws over us that they exempt themselves. They have become some kind of royalty as was not just never envisioned by the founders, but diametrically opposite of their intent.
Not to mention the judges!