What we really need is better voters. Term limits are a hack trying to work around the voters wanting to elect the same person over and over again. No, I have no idea how you fix that.
Allowing power to entrench will lead to entrenched power. Show me a system that doesn't involve hoping people suddenly become 'better voters' without term limits and I will jump on board. My plan is to push for actions that encourage diversity in our democratic processes like limiting money, term limits, removing gerrymandering, etc. These are actionable things that encourage the true core of a democracy, diversity of voice.
Obviously this opens up the vote to people who are uneducated and incapable of thinking beyond the shortest term. In other words, not all that much different from existing voters.
The voter won't be better, per se, but they will be different. They will have their own interests, which currently have no voice.
We don't impose intelligence tests on voters. We go on the assumption that somehow, the wisdom of crowds will make up for individual failings. But we're excluding millions of people from that, and they might well make the difference.
So you're going to vote for checks on these people but you're not going to vote them out?