We have an external team (not using ClickUp) that delivers assets (wiring diagrams, lineart etc.) that we use to create product artwork. I have these items as checklist items on specific artwork tasks the external assets are needed for.
I don't uses sub-tasks for this because:
  1. I can't assign to someone not on my team and not on my team and not using ClickUp.
  2. There isn't any "work" to be done by my team (anyone using ClickUp). It's just a blocking dependency.
So, It would be nice to allow Checklist items to have dependencies - e.g. artwork task "waiting on" checklist items A, B, C.