"The only thing I can see that is of benefit is
the shorter copper tubing route to the main
tube."

.... unless you install another propane tank under the sliding door. I'm in
the process of doing that now and have also removed the OEM heater under the
bench. And, I'm not using copper tubing, rather the rubber hose commonly
used now.

Bob Stevens
'87 Westy Syncro
"Passion Fruit"