The FOMC already releases (and has released since 1979) a range and a "central tendency" of its projections for nominal GDP growth, real GDP growth, PCE inflation, and the civilian unemployment rate twice each year, publishing them as part of the semiannual 17 Monetary Policy Report to the Congress.
These projections are actually quite interesting, as they represent the views of Fed policymakers of the future evolution of the economy, conditional on what each policymaker views as the best path for future policy.