This is awesome, @Almopt! 
The drag-and-drop functionality opens up so many possibilities for dynamic app interactions in Retool.
A couple of questions:
Does the component support nested drag-and-drop (e.g., rearranging items within groups)?
Are there any specific performance considerations for handling a large number of items?
We at Widle love experimenting with custom components, and this one looks like a game-changer for building more intuitive apps. Would love to try it out and explore potential use cases with you! 
You can also check out Hackathon participation with @ZeroCodez a Client Collaboration, Redefined: Our Retool + Weavy Hackathon Masterpiece. It’s a great space where we could potentially collaborate with your idea to build something even more powerful for project management.
We are Looking forward to connecting and exploring this further!