if concrete structure is cumpromised (basically irrepairable and condemned) no point paying more to insure it. may as well quickly sell and buy another with zero structural defects.
I used to think the MCST covered everything till I had to fix a spalling issue in my unit. That taught me to double-check what's insured. If you're in a landed property though, stuff like concrete cracks or foundation issues are really on you. I had a good experience getting repairs done through a masonry company dallas recommended on a forum—worked out smoother than I expected.