Configuring the URLSelectorStrategy right now will provide the user to customize the FIALOVER logic.
http://anonsvn.jboss.org/repos/jbossas/trunk/connector/src/main/org/jboss/resource/adapter/jdbc/URLSelectorStrategy.java
While implementing the Datasource load balancing logic in the URLSelectorStrategy I could make that it will not work unless there is the change in the matchManagedConnection(..)/createManagedConnection() .
Right now the createManagedConnection is using the URLSelectorStrategy implementation to find the the appropriate URL to be used in creation of ManagedConnection , for loadbalancing the matchManagedConneciton() too needs modification .
Before I start thinking about about the implementation of loadbalancing at Jboss DS side in detail I wanted to make sure if this would be a good feature to add on .