I think it would be a huge help to be able to optionally show the number of records on each connection line as soon as the output is complete. This would help us, at a glance, be able to see if we are losing records, gaining duplicate records, etc, without having to notate everything ourselves.
i.e., if I have 20,000 records when I start, I apply 3 joins and expect to still have 20k at the end, this would help me catch issues very quickly. As it stands, I end up notating the results for each node to make sure I’m getting what I expect.
Note that I stumbled on the blog related to the Streaming Execution Beta - (which is very cool looking!). THIS FEATURE IS ACTUALLY IMPLEMENTED THERE!! It looks great, and I would love to see that incorporated into the main user interface so we can utilize it even when not Streaming!