Nah, I'm not a fan of that idea. I'd prefer to change the 22nd Amendment only limit the presidency to 2 consecutive terms and partial terms not counted at all.
If there's a one-term limit, I prefer the South Korean model of 5 years. 4 years is definitely too short, but 6 years as in Mexico or the Phillipines is too long, imho. And the term limit shouldn't absolute / for life. Just for immediate successive terms.
What in addition creates a problem is how to deal with incomplete terms? Are succeeding VPs allowed to run for a full term or not? Sure, you could do a snap election with a caretaker leading the govt in the meantime, but that would change the original schedule and kind of conflict with congressional elections. Would be better to hold an entire national election with the legislative branch elected to the same term as the prez.
Since under the 22nd Amendment, you can only run for 1 term if you served >2 years of someone else's term, presumably those who served more than 2/2.5/3 years (depending on if the sole term is 4, 5, or 6 years) of someone else's term would be ineligible to run for a full term.
That's precisely how it works in the Philippines, I think.
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