Dallas , Here are some initial reactions to your five proposed levels of interoperability.
1. I would group Levels 1 and 2 as the basic conformance requirement.
Without Level 2, half of the original business case (and most of the business case on the court side) potentially goes away.
The Georgia tests showed that interoperability at Level 1 is not.
2. I would group Levels 3 and 4 because most case initiation filings cannot be completed without a filing fee.
This leaves you with three meaningful conformance levels.
I agree with the sequence for achieving those conformance levels.