Limiting the tenure of top officials is not only common in the federal government, but it's also feasible and prudent, so long as the terms are sufficiently long and those subject to limited tenures have guaranteed independence from the political winds of the day.
Politics has infected the Supreme Court confirmation process. Everyone knows it. Denying it is pointless, and so is blaming one another for starting it. The American people do not care who created this problem or how it began. They want their elected representatives to fix it. Here's how.