It's not like we're blindly considering something that has never been tried. California enacted term limits, and there were studies[1] as to the effect it had. Information as to some aspects of it is but a click or search away. Here's some highlights of the summary I linked to:
In both houses, committees now screen out fewer bills assigned to them and are more likely to see their work rewritten at later stages. The practice of“hijacking” Assembly bills—gutting their contents and amending them thoroughly in the Senate—has increased sharply. As a body, the Legislature is less likely to alter theGovernor’s Budget, and its own budget process neither encourages fiscal discipline nor links legislators’ requests to overall spending goals. In addition, legislative oversight of the executive branch has declined significantly.
...legislators are learning more quickly than their precursors, but that frequent changes in the membership and leadership of legislative committees, especially in the Assembly, diminish their expertise in many important policy areas. Many committees lack the experience to weed out bad bills and to ensure that agencies are acting efficiently and in accordance with legislative intent.
That said, overall the summary finds that the effects of term limits were neither as good as proponents hoped or as bad as detractors feared.
In both houses, committees now screen out fewer bills assigned to them and are more likely to see their work rewritten at later stages. The practice of“hijacking” Assembly bills—gutting their contents and amending them thoroughly in the Senate—has increased sharply. As a body, the Legislature is less likely to alter theGovernor’s Budget, and its own budget process neither encourages fiscal discipline nor links legislators’ requests to overall spending goals. In addition, legislative oversight of the executive branch has declined significantly.
...legislators are learning more quickly than their precursors, but that frequent changes in the membership and leadership of legislative committees, especially in the Assembly, diminish their expertise in many important policy areas. Many committees lack the experience to weed out bad bills and to ensure that agencies are acting efficiently and in accordance with legislative intent.
That said, overall the summary finds that the effects of term limits were neither as good as proponents hoped or as bad as detractors feared.
1: "How Have Term Limits Affected the California Legislature?" https://www.ppic.org/content/pubs/rb/RB_1104BCRB.pdf