There have been reports that the USN wants the VSTOL JSF scrapped, compelling the USMC to go with the CV version, thus lowering the cost.
Better yet for the USN, maybe forcing the USMC to take some F-18E/F's too.
If that was to happen, it would wreck plans for JSF to replace the UK Harriers, and force the UK to go with conventional carriers for the CVF programme.
More expensive, and the last time the UK operated conventional carriers was in 1978 when the old Ark Royal decommissioned.
It has always been a possibility, hence the projected designs for CVF having included conventional carriers as well as VSTOL versions.
Thales, one of two contractors bidding for CVF (the other is BAE), have unveiled their latest thinking, with two separate islands, and an angled flight deck.
Hopefully this will be resisted, apart from other innovations, the VSTOL JSF is a real leap forward, (and the reason the UK joined the programme at a very early stage), the requirement for an all-new dedicated VSTOL design being expensive and having a limited market, (USMC perhaps, 150-200 for the UK, and perhaps 50 more for the Spanish and Italian navies).