Thanks for coming to the talk! Here are some more references about weenies, level design, and psycology.
A Taxonomy of Weenies (Ghost of Tsushima) – I would also recommend watching the full GDC talk from Parker Hamilton for the best formulation of weenies and leading the player.
35 Ways to Guide the Player – a nice top level breakdown.
Invisible Intuition – Guiding the player GDC breakdown by David Shaver
Making Your Game Better with Pscycology and Playtesting – Richard Lemarchand talking about how Naughty Dog do it (which is very well!)
Theory of Theme Parks – Weenies – a bit more theory from theme park design.