Well, what we're talking about is how to keep civil liberties while also effecting a quarantine. I think if we came up with a solution that was as good as the current solution but that had less risk of giving the government abusable and sticky power, that would satisfy the goal of the discussion.

I could offer some changes to the idea I proposed that would address some of your concerns (as well as argue that there are some effectiveness benefits over the current policy to balance out the downsides), and we could have an insightful discussion going over it, but that would distract from the broader point of "if we put our heads to it we might be able to avoid an expansion in government power while not making any unacceptable sacrifices."