Only had a quick play on my tablet, but it looks nice. The visual UI is intuitive and very smooth, no unpleasant surprises!
I haven’t thought about use cases really - I’ve been learning how to use d3js and Sveltejs. I’ve got a simple d3-force svelte component working here. Just the layout so far, next is to add interactivity (for now you can only hover over a node - no click and drag yet). It’s based on a d3 example that I’m aiming to recreate, the Force-Directed Graph: