Role
Will the evolved unit fill carry, support, hybrid, farm, control, or boss duty?

Progression system
Plan the role, confirm the live recipe, lock valuable materials, and evolve the unit that changes your account—not merely the newest unit.
Before confirming
Will the evolved unit fill carry, support, hybrid, farm, control, or boss duty?
Read the exact material, kill, quest, and fodder requirements in the current build.
Check whether evolution adds Hybrid, Full AoE, a new element, or a different attack pattern.
Confirm no ingredient is needed by a higher-priority unit or limited event craft.
Estimate which existing stages become easier after this one evolution.
Avoid heavy spending if a near-term banner or update could immediately replace the same role.
Give one point for each: used in several modes, fixes missing coverage, meaningfully changes targeting, materials are currently farmable, and the unit already has acceptable stats/trait. Evolve the highest-impact candidate, not necessarily the rarest.
Retest placement, targeting priority, upgrade breakpoints, and team cost. An evolved kit may want a different tile or support partner. Only then decide whether premium trait rerolls are justified.
Plan the trait