Airbags don’t go into the A pillars typically - they start at about the top of the windshield, and when they blow the headliner tears, but not the plastic covering the A pillar.

Conversely, a thick-enough A-pillar would be a great place for a forward-raving camera and driver-facing flat-panel display with face-tracking camera to always show the right perspective, thus making the A-pillar invisible.