Cvs already continuously repair themselves while underway. This replicates the repair parties aboard ships. From the first damage ships begin immediate repair. Once hit, CV's are in a continuous state of repair.
50K of bombs to sink a CV, Storch?
CVs should be vulnerable...that's why Fleets are built AROUND them. The FLEET should protect the CV, not artificial 50K hardness. CV's depended upon the surrounding Fleet, and it's own Air CAP, to protect the CV. The Battle of Midway proved how vulnerable CVs were...and how effective dive bombing (JABO) could be even in heavy ack.
In my opinion...CVs are waaayyyy over-hardened as they are. Consider the Japanese attack upon Pear Harbor...did the USS Arizona require 50K of bombs to sink it?
I will vote for 50K of damage being done to my Corsair before I spring an oil leak, though! :-)
Just some thoughts....