There's something magic about a project room.

That is, a dedicated room where the project members can accumulate post-its, scribbles, etc as they work.

A few things it does:

Shared memory palace allows everyone to maintain more rich and nuanced memories by spatializing them.

Humans are significantly better at recalling spatialized memories!

Shared landmarks orient everyone in the team in similar spatial metaphors, allowing gesturing in a direction to remind people of a concept.

Stigmergy, to offload some of the thinking and memory into a physical space.

The team is storing state outside of their minds, even if they're illegible scribbles.

If you tear down that state it's like a lobotomy.

A space that is only temporary, that will reset to a base state every night, cannot accumulate that meaning and state.