After is generally better, at least than in an equal time period before, though I don't attribute it to term limits, which were a bad idea.

> the last real structural reforms to state government were before term limits

The last major structural reform to state government was when it was finally made modestly governable by the repeal of the supermajority budget requirement in 2010, 14 years after term limits applied to the Assembly (a little over two full turnovers forced by term limits), 12 years after they applied to the Senate (one full turnover and halfway through the next.)

The last major structural reforms of government administration (which may be more what you are thinking of, though of less practical effect) were a series under Schwarzenegger in 2005 (or so, not sure they all happened that year), still well after term limits.