Colouring ops is great, making notes with a text dat is priceless, but it would be great if you could draw background boxes around groups of ops to symbolise things like sub-systems or workloads. Think of a coloured version of the “fences” widget for windows stardock.com/products/fences/
I constantly have to revisit and re-interpret entire networks op by op, this would greatly simplify the recognition of what’s actually going on, especially when sharing files.