Consider what it currently takes just to do a full autoland with rollout. Two or three autopilots. Increased checks and certifications on the MX side. Increased training on the crew side. Enhanced tolerances on the ground-based navaids. Critical areas cleared. Notifying the controllers who are also monitoring closely. Fully available/usable runway. I'm sure I'm missing a bunch more factors. And yet, crews have to intervene regularly (and immediately) to prevent undesired states/outcomes. To make these factors a minimum requirement for every landing at every airport seems a reach to me at this point.