Unless there is a legal reason. There should be no reason why they can’t release it as it is.
I have converted old projects into new versions of the engine and it went completely fine.
I don’t see it taking 1-2 person more than two weeks to get this done.
They don’t need to use the new 5.0 features (World Partition). Just make sure the previous code work on the 5.1 or 5.2 release. That’s all,
They have released old projects in the past and didn’t upgrade any of the features other than making sure it work.
Heck example projects were supported for 20+ major releases.
Whoever handles the versioning support for these example projects (for example: kite demo. infiltrator demo…etc) need to do the same to Lumen in the land of nanite.
If any Epic games employee is reading this. I proclaim you WILL release this project by GDC! I speak it into existence!