I would say that map size never was "most important", at least not to the players, they've been complaining about huge but empty maps for years (the poster child of this, AC Odyssey was released in 2018, six years ago). It was just something devs and publishers pushed to one up each other in some kind of "bigger = better" way.
I'm so sick of action rpgs including crafting or an endless list of slightly different weapons. Give me a small mix of situational weapons at most and let the gameplay be how difficulty works.