And therein lies the problem, precisely. The risk that the lawless exercise of power might be gotten away with. Without laws, without judicial procedure, without judges deciding facts, even when errant, in the end, what we have is something other than a civil society. Call it what you want - the alternative - but whatever it is, it is across the River Styx, on the dark side. This hard case is driving some to simply make bad policy choices for the long term. Resist the temptation, and then resist it some more, is my best advice.
But it isn't lawless; it's simply another method of administering the law. The Constitution cut the courts out of the impeachment process for a reason.
platos republic anyone? You can have it.
In impeachment, the legislators are the judges. Check and balance. Otherwise we have the Imperial Uber Alles Courtocrats.