Punishing the liars after the fact, to me, sounds like a very slippery slope. What percentage of promises have to be upkept? Do they have to be kept if the situation changes and they're no longer the correct decision? Do they have to be upkept in special circumstances such as Covid/WW3/etc? Though I would love a system where applicants list their main plans and their progress (not as done or not but as references to legsilation changes, etc) gets officially documented after their term. It won't be wildly useful but it doesn't sound like too much work either.

I like local governance but you have the same issue on a different scale. Whether the president or the governor runs the show I'd want them to be replaceable in a timely manner and to have a little fire under their ass.

Moving your feet is something I also do but I'm not sure is sustainable. What you get is people going to more social places in the beginning of their adult life to get as much support as possible and then move to the most capitalistic places possible once they start earning big money to pay less taxes/have more buying power. How many people do that, I don't know. In my circles it's a lot and I'm one of them.

It's one of those perfect is the opposite of good things though since centralised politics isn't really better either..