Hm, the big concern is how far the left was able to push things without even having control of the executive branch. The executive has a lot of leway to go after people without a single law being passed. They might not be able to get everything they want written in law, but they can send an awful lot of "dear colleague" letters than can shift things quiet signifigantly, the IRS can be reweaponized, and more concerningly I don't think the democrats are even capable of feeling shame about it. They'll probably cheer at every new scalp.
Communications laws leave a whole lot of leway to pressure censorship. Antifia can be unleased on their enemies without even token resistance.
That's what also makes this time so scary: so much of the political power is wielded outside of the system: the democrat party legitimately has a militant arm thats totally unconstrained by official law. And well, we know how much of a corupt bit of terriblness the FBI can be. Imagine what they can do with an FBI leaking to Antifia! Or FBI working very closely with Google to find something to punish political enemies with.
They have a lot of leavers to lean on to destroy their enemies. If they lean on most of them, I think we probably are in end of the republic teritory. Or at least, end of anything but some flavor of socialism as the acceptable ideology.