Term limits for House and Senate Now!!!
There are pros and cons to everything. Step back and think about it before thinking a “magic bullet” will solve it.
You are correct. Chiefs of staff would just run in place of the term-limited candidate....or the spouse, child, etc.
Voters have shown that they are fine with monarchies.
The best would be to term limit any job in government....local, state and federal to 12 years. After that you can no longer work in any role for government.
That is not perfect, but would cleanse the bureaucracy as well