I have long advocated for 6-year terms for president with no re-election. Gives him one year to kiss the special interest *** that got him elected, and to try to fake "fulfill" the stupid campaign promises, like they all waste their first year doing. Then it also gives them one year to campaign for his replacement, like they waste their last year doing for their own reelection anyway. So then they have 4 years in the middle to actually be productive.
I like the idea of 5-year terms for everyone else because it staggers the elections against the presidents so we hopefully see more mixing and matching in Congress and the Senate. I would also say that any law-maker can have no more than 3 terms, but they cannot run consecutively. They have to take at least a term off in between. So you can be in the Senate for 5 years, then out for 5 years, then possibly re-elected if you run again, and so on. There is some benefit to have experience in Congress, as so much of what they do depends on connections that take time to build and maintain.
One more thing they need is full financial transparency for anyone in a public political position, and the elimination of lobbying. Call it what it is, bribery, and prosecute accordingly.
But yeah, none of this is changing because it would hurt the people who have to vote it in, would take them out of their cushy comfortable lives and make them actually connect with people and make a difference and be honest. And none of them want that.