Looking for edge cases I keep coming back to [v3]

Looking for honest feedback, not validation. I want to write something more comprehensive about this later but starting with a quick post to gather thoughts.

Not sure if this is the right place to ask, mods please remove if it is not. Not sure if this is the right place to ask, mods please remove if it is not. This came up at a meetup recently and the room was split, so curious what the broader community thinks.