Tier-2 parity — what is the most-missing primitive on Copilot / Gemini / Kimi?

[espetro]

Right now Tier-2 (Copilot, Gemini, Kimi) gets skills + commands, but deep hooks (the equivalents of PreToolUse, SubagentStop, Stop) do not translate cleanly across all three. That means a plugin that leans on session lifecycle hooks ships only on Tier-1 today.

Which Tier-2 limitation hurts you the most? What is the plugin you would write if the gap were closed?

Ranking the candidates from my side:

1. Stop / session-end hook — agents that need to summarize state on exit
2. PreToolUse with shell access — agents that gate destructive commands
3. Subagent lifecycle — orchestrators that spawn + monitor subagents

Vote by replying with the number + your use case.