Re: Do you think Starfleet felt Kirk had failed any of the missions?
Preventing a likely galactic war (had the UFP President been assinated) I suspect command would be delighted with him. We also have no idea how old the 1701-A was. Command might have recieved preliminary damaged reports and decided the ship wasn't worth the effort of repairing.
The 1701-B would've already been on the drawing board since it launches a year after the events of The Undiscovered Country
. Likely the 1701-A would've been put out to pasture when Kirk had retired anyway. The battle damage just accelerated the retirement of the ship.
Self-appointed Knight of the Abrams Table! - Thanks Marsden!