The move is the answer.
Add a player, re-run the additive Team KR, and read the delta under the 34-man cap and the clock.
Add a player, read the delta.
Add a recruit or portal target to the roster and re-run Team KR through the additive core: the delta is the answer, the marginal team-KR movement he produces given the current roster, park, and needs. Then read the delta against his cost, the scholarship-and-package number, so the output is value added per dollar, not a raw grade.
Adding the 81-KR second baseman moves Team KR from 86.4 to 88.5, a +2.1 delta, read against his $210K cost for value added per dollar. The move is the answer, and the same-cost 85-KR corner bat at a position of strength would move the team a third as much. The delta is the answer: marginal team-KR movement per dollar, not the player's grade in isolation.
Illustrative engine read on the real add-and-re-run (the marginal Team KR delta through the additive core, read against the scholarship-and-package cost as value per dollar). Composite player, demonstration figures flagged v0 and current-as-of.
The move under the constraints.
Every move is checked against the amateur constraints: the 34-man fully-funded roster cap, so adding one means the headcount and the funding both bind; the eligibility clock, so the player has to have the seasons; and the three-phase coverage, so the roster still covers the defensive spectrum, the platoon, and the arms. To bring one in under the cap, someone comes off.
Under the 34-man cap the add is really a swap: the 81-KR glove in, the 58-KR redundant bat out, a +1.6 net move, with the cap, the clock, and the three-phase coverage all checked and holding. To fit one in, someone comes off, and the net is the answer. Under the cap, every add is a swap, and the net team-KR delta is what matters.
Illustrative engine read on the real move-under-constraints (a swap under the 34-man cap, the eligibility-clock and three-phase-coverage checks, the net team-KR delta). Composite players, demonstration figures flagged v0 and current-as-of.
Depth, platoon, and the season shape.
Beyond the marginal add, the engine reads the construction margin: depth and injury resilience over the season, platoon and handedness balance, and the bullpen-and-lineup shape. It is the thin layer on top of the additive core where a college roster is actually built well or badly, and the output is a construction plan with the constraint check, not a single number.
The construction margin is where the roster is built well or badly over a full season: this one is deep at the top and thin behind it, left-handed heavy, and set at the back of the bullpen, and the output is a plan with the constraint check, not a lone Team KR. The additive core is the answer; the margin is how you build it well. The margin is the thin layer on top of the additive core where a roster is actually built well or badly.
Illustrative engine read on the real construction margin (depth and injury resilience, platoon and handedness, bullpen and lineup shape) as a construction plan with the constraint check. Composite roster, demonstration figures.
The engine reads the delta against the cost, because a roster is not a pile of grades.
Make the move. Read the delta.
College Roster prices a move by what it does to the team: add, swap, or cut, re-run the additive Team KR, read the delta against the scholarship-and-NIL cost under the 34-man cap and the clock, with the three-phase coverage check and the construction margin on top.