The ability to hide legacy investments that have either been fully exited or fully liquidated from portfolio views. They would still factor into aggregate portfolio calculations, but would no longer appear in the investment holdings table. Options to implement this seem to be either allowing users to hide companies on an individual basis (probably preferred) and/or have a button for each portfolio that hides all holdings with an FMV of 0 (actively updated to 0, not a holding that has never had an FMV entered) and no uncalled capital remaining.