Question

Would there be plans to add integrations for Bosses, Raid Bases, Event Manager events, NPC events, and custom events from other plugins, so they can be configured and added as separate objective targets?

Hey! Yes, so far, only Raidable Bases is on the roadmap , though it's not in the near future plans, as I want to work on the core features of Contracts before integrating other plugins. More integrations may be possible too, though it entirely depends on whether those plugins expose hooks and APIs for Contracts to hook into to listen for progress events.

They would also need to be implemented individually, off the top of my head, I don't see how a custom integration that is entirely config-based would be possible, though I really haven't done any research around it.