For those wondering, I've spoken to Steve at Doll & Hobby; their "re-issue" (from new all tooling) of the Sealab kit has been pushed out until sometime in 2024. Still no word on how exact of a match it will be to the original, but I'm not sure they're including 'people using it for Millennium Falcon parts' as their primary market.
Anyway, hope that news is useful for someone.
Anyway, hope that news is useful for someone.