I'm an enthusiastic Early Adopter of the new LabVIEW Channels (a.k.a. "Channel Wires"), the Big New Feature of LabVIEW 2016. One restriction of Channels is that they can not be passed into or out of sub-VIs called as part of a Start Asynchronous Call. While the workaround for single loops is to just place the sub-VI on the caller's Block Diagram, if you need to spawn multiple "Clones" whose number is determined at Run Time, this is a problem.
The attached Zip File contains a demonstration Channel Clones Project, along with an eight-page Document describing the Project and how nicely it works. Enjoy.
Bob Schor