RE the Bilsteins. I was disappointed with the Bilsteins as well. I contacted them and they re-valved the shocks to my specifications for free. Lifetime warranty still in effect. Their high performance facility in California did the re-valving.
Just blocking them off should be fine. The radiator fluid flows through that system only when you turn your heater on. When the heater is turned off it is essentially blocked off, so by what you describe you are simply shortening the loop.
One side note: With my old diesels of the past...
Expedition Portal did not receive the link to the first survey as it was put together in May of 09. It was made into an aluminum clad brochure that was presented to the head of the G-wagen division in Graz at the 30th anniversary celebration and another one was presented to the head...