I would say one 8-year term with a removal vote in at mid-point. It takes 33% (or so) to keep your job in the mid-term and you run unopposed. If the axe is dropped then he becomes a lame duck and we do primaries and the like to pick a new president within a reasonable amount of time, not the shit-show of what we are going through now.

> It takes 33% (or so) to keep your job in the mid-term and you run unopposed.

Who votes at the 4-year mark? The senate, congress, or national election? If it's the latter, electoral or popular vote? If it's via popular vote I think it'd be next to impossible to eject anyone.

Pop vote. The idea is to only remove a sitting president if the people really want it. 50% to remove would happen to often in this day.