Play with this thought with me. What if our elections were (more) temporary and had to be ratified a year later? There would be no sense in doing that with governors or the House of Representatives, which are already only two years. But Senators and presidents, we get to do a redo a year in. First terms only.
Looking at presidential approval ratings as a proxy, it looks like Truman, Carter and Reagan would be marginal but survive, Clinton 50-50, and both Obama and Trump would be out. That's not necessarily reality, however, as each of them would have to run against someone, and as we saw in 2016, that matters a lot. The serious third-party impact of Ross Perot also makes 1992 even more unpredictable.
I will concede it a net negative to have an even longer campaign season. I have also not thought through the elite media and general PR implications of "how long can you lie and keep up the appearance" for such events as framing Donald Trump about Russia without serious media scrutiny. It would also change the territory for protests. Maybe those would be worse, maybe better.
No fair speculating why this is occurring to me just now.