Player diversity is not scenario diversity
Two NFL lineups can have four different players and still depend on the exact same game environment, quarterback outcome, and chalk failure. Conversely, two lineups can share several strong plays while expressing genuinely different slate theses through their stacks and leverage points.
What to review at the portfolio level
Player exposure versus projected ownership.
Repeated lineup cores.
Stack and game-environment concentration.
Captain and FLEX exposure separately in Showdown.
How many distinct slate scenarios your entries actually cover.
Diversification has an opportunity cost
Forcing every lineup to be radically different can push good players out merely to satisfy a rule. The point is not maximum entropy. The point is to reduce unnecessary correlation among your own entries without giving away too much lineup quality.
How JARVIS reviews a portfolio
Intentional concentration beats accidental concentration
JARVIS can surface where your portfolio is overweight, underweight, or repeatedly dependent on the same stack or scenario. Concentration is not automatically a problem; hidden concentration is.