ONB, you've basically got it. Although the static test was deemed a failure because it didn't make 150%, it was mostly successful because it provided plenty of data up to the 147% point.
These data, coupled with post-test reconstruction of the exact failure mode, give plenty of reason to believe that minor upgrades and modern analytic processes (and several tonnes of paperwork) will result in certification at the desired TOGW (ZFW actually) level.
And in service, it will be low-cycle fatigue (TO & landing cycles) that will be the telling criteria.