This disk-upgrade page is more useful when it explains which disks deserve early investment and when upgrading should pause for reevaluation instead of preserving rules like 'only enhance A/S rank' and one fixed substat list as permanent doctrine. For current players, the practical questions are whether a disk is likely to stay on an active character, whether it fills a meaningful stat gap right now, and whether further resources are chasing only marginal gains.
A safer way to judge disk upgrades is:
- Give enhancement resources first to disks that are both actively equipped and still have real growth value instead of maxing anything rare on sight
- Damage, support, and sustain roles care about different stat patterns, so matching the role matters more than repeating one generic priority line
- If a disk is only transitional gear, upgrading it to the 'usable now' stage is often enough before heavier investment
So this page now focuses on investment order and stop-point judgment for disk upgrades instead of preserving one fixed enhancement slogan as the only answer.