This is a good point to bring up. That age 20-23 bracket has 5 potential NHL guys: Bowey, Djoos, Siegenthaler, Johansen, Hobbs. At some point, some of them will have to be moved. Might be the best way to build some forward depth in the system.
Bowey and Djoos cannot play in Hershey next year (wont clear waivers). So the imminent decision is those 2. Obv Kempny and Orpik returning would mean 5 d-men for the Caps. Locked and loaded. I cannot see Djoos not being #6. It's possible he could get dealt, but I see Bowey as much more likely. He's on the outside looking in, on this scenario.
And to your point....Siegs, LuJo, and Hobbs are all top 4 in Hershey. I'm not sure who else is there. But they will come calling soon.
To this end, I wouldnt sign any other D for longer that 2 years. Orpik would be 1 yr, IMO.