Mueller should step aside, but he won’t. He should also be fired, but that is now political suicide and would give the Uniparty Republicans the excuse they need to join the Democrats and support impeachment IMO. Mueller is the slow burning fuse to keep the Russia hysteria alive and produce the fiction necessary to try to cripple Trump, stop his agenda or get him impeached.
It might not if they put Dreeben in charge as he is well respected . Dont know if that is allowed as per gov. Regs.
You are correct that firing Mueller (and Rosenstein) MIGHT lead to impeachment, but leaving him in place WILL lead to impeachment, without question.
Every day that he is left in place makes Trump’s situation worse.
He and Rosenstein have to go, and go now.