I'm not sure what the solution to this is, but do other people also find that the Prefect UI Graph becomes unreadable with even a fairly modest number of parallel tasks (e.g. 1000)? Being able to split out into smaller sub-flows would help, but my understanding at the moment is that flows are designed to be run sequentially, so this isn't really an option. I'm using Prefect Cloud UI.

Indeed, for me is quite unreadable too. One ideia is to have a context manager like tags that makes optional to collapse things. https://prefect-community.slack.com/archives/C0192RWGJQH/p1711652469938939

some kind of collapsing paradigm would definitely be one good option!