They never would have done it though. Adding the ski jumps off either beam would have really screwed those ships up, not to mention they would no longer be able to pass through the Panama canal. They only had a few feet to spare when they were designed in the first place for the canal, and that was a requirement for the ship.
Really the ONLY way to make the ship viable in this day and age would be to replace the boilers with reactors and make it a nuke, gut every wire and cable on the thing and start from scratch with all brand new electronics and weapons systems.
Considering what that would cost, better to leave them mothballed.