Nice to see some uptake on this. My other hot take is that Americans should take France a lot more seriously, when it comes to constitutional reform. My thinking is that you're too far down the route of presidentialism to reverse course now. Also, Congress is not structured to exercise appropriate oversight of the administrative state, the way that cabinet does in a parliamentary system. (Another feature of the Trump administration has been the breakdown of congressional oversight, with the executive branch refusing to turn over documents -- to the legislature! -- refusing to answer questions, etc.) So basically, there is no path that leads from where you are now to legislative supremacy. If you're stuck with executive supremacy then, you might as well try to make it work. And if you look around for a rich liberal democracy where it more-or-less works, probably the best model you can find is France.

Right now, the biggest problem with the new American model of executive supremacy is the atrophy of the legislature, with the replacement of Congressional law-making by executive orders (e.g. the fact that Trump has not tried to pass legislation on tariffs is crazy!) This is, as many people have pointed out, dangerous, because it gives the party in power a strong incentive to not allow the other party to take power, because executive orders can so easily be rescinded. The solution that France adopted to this is to give the President a lot more power over the legislature (esp. appointment of the Prime Minister). By subordinating the legislature to the executive more completely, you at least restore the statutory process, and avoid the sort of Caesarism that America is experiencing now.

The French constitution has some problematic features (I recommend Pierre Rosanvallon's book Good Government as the most cogent defence of it I've seen). France is, however, more functional that the U.S. at the moment. More importantly, I think it's easier to find a path from where the U.S. is now to something like a French model than there is to a parliamentary model.