I recently finished the Haunted Hallow '24 series and really enjoyed it. I've always enjoyed the Hack your first, and challenge labs like those. 

Something I'd be interested in is a multi angled approach that pulls in various purple team exercises. I recall supersonic and Kate being kind of like this, but specifically maybe some OSINT/Recon that sets up some other labs in the series to include maybe some OT/ICS red teaming once you pivot out of the IT network? Maybe the manufacturer is a plastic jackolantern decoration company and you are pen testing them? 

Something like:
Lab 1 : Recon OSINT
Lab 2 : Get in the perimiter 
Lab 3 : Enumerate and pivot
Lab 4: Pwn some plc's/HMI
Lab 5: Exfiltrate 
Lab 6: Defensive quarantine/containment
Lab 7: Investigate/clean up

I can't remember what series it was in but there was an old school choose your own adventure text rpg, and that was fun. It just through in a little change of pace. I know whatever you put out will be awesome like always!

I love some good crypto boxes, as well as those that build on one another. "That random bit of information for that first lab? Yeah, that's mega important in the 5th lab, but we're not going to go out of our way to make it obvious"