I've been through Graveyeard Games. It was a great house! If I recall if twas probably my second favorite original next to the Yeti one that year. This was 2019 (HHN 29)
The only downside is that they wouldn't be able to recreate that massive scale the facade had, but the rest of the house was about average height for your typical HHN house. Having tighter corners and smaller spaces would actually work to its advantage and make it more realistic for a grave setting and make it more intense.
Are we more certain this is what is going in JP? If so, I'm so down! This could be one of the best originals HHN has done in a long time. The final scene was intense and would be perfect for Hollywood to take on.
EDIT TO ADD: Also realized this would be the perfect budget house for HHN being they could reuse a lot of the tomb sets from the Monstrous and Universal Monsters houses and the coffins from the final scene from Poltergeist.