As Mike said, there is no Aruba "standard" logging setup due to the huge number of different customer requirements.
I, however, think the default levels are sufficient unless I am troubleshooting an issue. Then, if it is a general issue, I will set the correct log to the debugging and watch it. If it is a user issue, I will turn on debugging for a particular user (all logs) and watch what happens.
I do know that setting the logs too granular (too much logging) tends to be a bad idea due to the sheer number of messages received.