I have a really strong conviction that RPG players should want to go back to locations they already visited.

Whether the bad guy’s lab had a vat of acid that could destroy the lich’s phylactery, or a magical being might have some insight into their quest, or they cleared out an old castle ruin and made it their new home. It doesn’t matter why, it should just feel like something they can reach out and use.

I usually set my adventures either in or around civilization for this reason. Their changes become more tangible and there are always people and sights to return to. They can overlook that giant crater they made after causing a portal to hell to implode, or come back to some NPC that screwed them over and give him “a fate worse than death.”

I don’t think canned adventures support this very well. It takes GM’s personal world building to pull it off.

Anyway, just a thought.