IMO the Navy will end up scrapping the ship in place, probably by first building a cofferdam around it and pumping all the water inside out.
A distinct possibility.
Even if Bonhomme Richard is repairable and the decision is made to repair the ship (two separate decisions), the ship will still be out of service for a year or two. That is going to impact the ARG/MEU deployment schedule for WestPac. If the ship is a write off, it may be necessary to activate a lesser capable ship from the reserve fleet. That will also take time, but not nearly as long as building a new ship and it will restore most of the lost capability for the 4 to 5 years (being very optimistic here) it would take to get a new LHA funded and built.
There are three of the predecessor LHA class still in the inactive reserve fleets. (The rest have either been scrapped or expended as targets.) USS Nassau, LHA-4, is in the inactive reserve fleet at Beaumont, TX, but it is currently (2019) slated for sale/grant to Japan. USS Tarawa, LHA-1, and USS Pelileu, LHA-5, are at the inactive reserve fleet at Pearl Harbor. A non-profit group is trying to acquire USS Tarawa for use as the first amphibious warfare museum ship.
All three ships have had thirty year active service careers, two were laid up in 2011 and the Peleliu in 2015. If reactivation is necessary, USS Peleliu seems the logical choice as the gap filler. However, since the LHAs are technically less capable ships, it may be necessary to transfer an East Coast LHD to the West Coast to ensure WestPac ARGs maintain full operational capabilities.
https://en.wikipedia.org/wiki/List_of_amphibious_warfare_ships#United_States