Which means codifying all of the above into law, or even the Constitution, like you’re saying. Which means - maybe a “tyrant-President” needs to do all these things… but honestly it might be completely superfluous, and even counter-productive. CONGRESS needs to do these things.
Weakening the presidency means creating a role that takes over some of its current authority. Lots of semi-presidential constitutional models out there with various pros and cons. The French one seems fun.
Under the current Constitution, that role is taken by Congress. We could get rid of that, but it seems like it would be exponentially more difficult, for not many benefits I can see. But I’m open to it, I guess. Still: a new Constitution is not something I feel like we have the will for right now.
I don't like the prospects either but it remains the case that the current constitution functions on the assumption that institutional prerogatives should outweigh partisan ones, and so long as that is obviously not how our politicians work, we'll be in some form of shithole or another.