Logging - Remote - Prepend Syslog message with infomation

In a dynamic IP enviroment, if you have many devices reporting in via Syslog to the dude, you cannot tell what device it is.
Can you allow us to prepend or append the syslog message with some text or the system identity?

(small development work - major impact).

On each router, go into /system logging, select the syslog rule, and add a prefix.