Welcome to the Western Australian way of doing things.
Seat locations
Our tickets, were for seats on Level 3, Section 353, which was really Level 2, Section 354. Attendant looked askance at us when we mentioned this made no sense, surprised they didn't go with the old "From Victoria are you" chestnut, truly bizarre.
Restricted viewing
We got talking to some Eagles supporters pre-match. The front row, Level 3 seats sold as "MFC Premium" are actually cut price Eagles members seats in the regular season as they have the view restricted by glass panels.
As you state, billions spent on design and construction of a stadium where front row seats have restricted views, and your seat number doesn't actually match where your seat is!!
Seems they ticketing team "saw us coming" and gypped MFC with the dud seats in the sun with restricted viewing