No plan to replace calendars. It's more of a ritual / planning phase. I wanna see how my day looks, how it feels. That's why there's all the color and fill coding on event blocks :D Integrations are on the way. The plan is to integrate with calendars and also todo apps. You make blocks on the dial and then add tasks to them. No plan to automate it fully, since manual work is what wires the brain.
It also has MCP integration (https://reassign.app/api/mcp) — my Claude already has a connection to Linear and Calendar. So I'm using it to start and plan my day. I can quickly get a skeleton of a day out and then polish it until it's done.