>The other area is workflow: you use software X and software Y in this way, but did you know most other companies link them up with software Z in the middle and it works much better, so long as you check the box that reminds you to tag the invoices (or whatever).

I think adding up all the time savings for certain workflows or integrations across different sets of products would be immensely useful. You're totally right there's no easy way to see that currently anywhere.