There are many ways to use Copperlan, let me try to break it down a little....
On a single computer, Copperlan manager will recognize all present MIDI ports. This includes Scope's MIDI sources and destinations, as well as all your interfaces (USB or not). For example, my ESI 8x8 MIDI interface shows up as 8 different MIDI ports (in and out).
You can select which ports will be accessed directly by the Copperlan manager (there's a "MIDI to CP" port selection, for connecting the MIDI inputs directly to Copperlan, and a "CP to MIDI", to connect Copperlan directly to a MIDI out port). For instance, selecting a USB keyboard as "MIDI to CP", and one of Scope's MIDI ports as "CP to MIDI" will allow you to connect them virtually and play Scope from the keyboard.
For apps that do not have MIDI ports, for instance Studio One, one can use Copperlan's 4 virtual MIDI ports (called VMIDI 1 to 4). They can be connected to physical ports, and show up on the software as regular MIDI ports (in the same way as, for eg, MidiYoke virtual ports).
So, in a single computer, Copperlan will do away with the need for other virtual MIDI cables and ports. On more than one computer it gets a lot more interesting, as it will recognize ALL ports in ALL machines (have tried with 3 at the same time), and freely route MIDI between them. Again, this can be done by connecting the ports to Copperlan directly, or by using the 4 VMIDI ports Copperlan creates on each machine. A single Copperlan Manager instance on one of the computers is enough, as it can access all the ports on the network, you can configure each machine remotely.
One way I have tried this was to use my Launchpad, connected to the main DAW's USB, as a controller for Live on the laptop, and it works nicely, LED feedback and such... Also tried it the other way round, with a VCM600 connected to the laptop, controlling the main DAW. I am using a simple Gigabit switch to connect both machines via Ethernet (a Mac and a PC, BTW).
I think that having Copperlan in Scope (6) will allow for higher control resolution than MIDI... this way, it's still MIDI, 8 bit 127 step resolution... But as far as MIDI goes, this does the job perfectly.
Haven't tried Copperplug yet, but does look interesting as well...
I hope I have sort of answered your question, Bud. On top of all this, Copperplug has a quick and easy installation, very low latency, and a clean, elegant GUI. I suggest you give it a spin
Cheers,
T