Low and stable inflation in many countries is an important accomplishment that will continue to bring significant benefits.
Monetary policy has less room to maneuver when interest rates are close to zero, while expansionary fiscal policy is likely both more effective and less costly in terms of increased debt burden when interest rates are pinned at low levels.
Low marginal tax rates are supportive of economic growth. I would submit that we would want to look very hard at government spending - make sure it's controlled - before we raise taxes, which, in turn, would have negative impacts on the economy.
Middle-income living standards, and poverty for that matter, are best addressed through employment growth. By maintaining low inflation and low expectations of inflation, you can create new employment.
The credibility has begun to inure in the institution. Keeping inflation low and stable is an important precondition for a healthy and sustained economic growth.
There's no magical relationship between inverted yield curves and recession. There's a debate why long-term rates are so low. It's partly a low term premium and a lot of saving looking for a relatively limited number of investments.