Jay,
Done a lot of high speed, on-ramp, off- ramp, cornering.
I can tell you that the van lays flat, and get's it.
It is a vast improvement over the springs
alone.
Now if you were to add a onboard compessor, with leveling sensors, at
each back wheel, then as the van dropped to either side when cornering,
the compressor would kick the air to the side that requires air.
You could use the valves off a air ride semi-tractor suspension.
What a plumbing nite-mare.
The bags work fine T'ed together.
Forget about the Rube Goldberg systems.

Later,

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Terry 85 GL