Exclude sub-workflows from Deployment

I made a bunch of workflows that talk to the API of one of our other systems. There workflows are always part of other workflows. I would like these API workflows to be excluded from the deployment cycle from my VSW apps. This would save me the trouble to redeploy multiple applications when I make a change to one of the API workflows. 

But unfortunately I can't exclude nested workflows from the deployment cycle. Only workflows directly added to VSW can be excluded. Could you add the option to exclude nested workflows to?