What's the AI agent feature you keep wanting but no platform ships well?

Wishlist time. The features I keep wanting that no platform handles cleanly:

- Persistent memory across sessions that respects RBAC properly

- Real-time agent observability that finance and security can both use

- Multi-agent disagreement resolution as a first-class workflow

- Cost forecasting before the agent runs, not after

What's the feature you keep adding to your internal wishlist that vendors haven't shipped well yet?