per application Expressions

Wildfly supports Expression Substitution in descriptors [1]. These expressions are server global.

This should be enhanced to support application scoped expressions:
${this:aProperty}

It would be especially useful for Message Driven Beans, as an ActivationConfigProperty can only be set in a descriptor or via an annotation, but not in application code, so ActivationConfigProperties are effectively fixed.

Then you could deploy the same Message Driven Bean multiple times with a different name:

myMDB1.ear
myMDB2.ear

having

<activation-config-property-value>${this:queuename}</activation-config-property-value>

and define

<application-properties>
<application name="myMDB_DEV_QUEUE_1.ear">
<property name="queuename" value="DEV_QUEUE_1"/>
</application>
<application name="myMDB_DEV_QUEUE_2.ear">
<property name="queuename" value="DEV_QUEUE_2"/>
</application>
</application-properties>

whereas for production the queuename properties would be different.

[1] https://docs.jboss.org/author/display/WFLY10/Expressions