Re: Do you think Starfleet felt Kirk had failed any of the missions?
Well given the Federations ban on gentic engineering, it seems plausable that they would want to keep queit about the fact that 70 or so genetical engineered super-humans are living on a planet in the Ceti-Alpha system.
For all weknow Terrell didn't bother to check the library computer about the Ceti-Alpha system. And the Reliant was just checking systems that were close to Regula.
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.