I think we should keep the 688i's in there and simply add the new Virginia boats to the database so we can toss them into missions. Do we have spec's available for them anywhere ?
In real life, I see the Virginia classes and the 688i's working together. I don't see a full replacement of the 688i any time soon. It would be way too expensive to just scrap the ones we have.
Anyway.. of course, we now need to get the new Virginia boats into DW.
Also, probably the new littoral ships that they're working on too once we get solid specs for them.
(Might be interesting going up against those guys because you never know what modular package they may be carying. Do they have the ASW package, the minesweeping package ? etc...)