Problem: The current system for tracking Long Term Abuse (LTA) is barely functional. LTA case pages are often abandoned or jammed with IPs from a decade ago. Self-made lists (e.g., en:User:EvergreenFir/socks, en:User:NinjaRobotPirate/Socks) can be helpful but are idiosyncratic and incomplete.
Proposed solution: Create a system like Sockpuppet Investigations (SPI) where cases are filed, reviewed, and archived. Adding reporting abilities to Twinkle would be a huge help.
Who would benefit: Admins, vandal fighters
More comments: Having CheckUsers be able to confirm would be helpful (like SPI) but I imagine this being much more about behavior and geolocation. Maybe a subsection in SPI itself could work.