On second thoughts, for standalone usage it is a pain to have to tell the user that he must start the JVM with -Xbootclasspath/p:${openjdk-orb.jar} which might be a barrier to adoption for some users.
Ok so revisiting this again. It looks like we have to replace the org.omg APIs because they hard code ORB impl classes, so even if we renamed the packages, we still would need either endorsed or Xbootclasspath to be used by the user for non-modular standalone bootstrapping.
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Jason T. Greene
WildFly Lead / JBoss EAP Platform Architect
JBoss, a division of Red Hat