Would be so much worse… Think about any type of project or policy that takes more than 4 years to complete (and longer to see tangible benefits from).
It’s already bad enough having a GOP president come in every 8 years to undo most of the good things their Democratic predecessor accomplished (with Reagan removing Carter’s solar panels from the White House roof being the archetype).
Imagine having that pendulum swing every 4 years. Literally nothing that takes longer than 4 years would ever get done.