To run the Sonic Management Console (SMC) in Developer Mode, just edit <sonic-install-dir>/MQ<version>/bin/startmc.bat.  Find the line that says

"%MGMTCONSOLE_JRE%" "%SONIC_BOOT_CLASSPATH%" -cp "%SMC_CLASSPATH%" -Dsonicsw.home="%SONIC_HOME%" %SONICMQ_SSL_CLIENT% %SONICMQ_SSL_CLIENT_EXT% com.sonicsw.ma.gui.MgmtConsole

Add

-Ddeveloper=true

so that it looks like

"%MGMTCONSOLE_JRE%" "%SONIC_BOOT_CLASSPATH%" -cp "%SMC_CLASSPATH%" -Ddeveloper=true -Dsonicsw.home="%SONIC_HOME%" %SONICMQ_SSL_CLIENT% %SONICMQ_SSL_CLIENT_EXT% com.sonicsw.ma.gui.MgmtConsole

Now, when you start SMC, you won’t have to type the password anymore to connect to the Domain.  You’ll also see DEVELOPER in the title bar, as well as a Developer tab.

One thing this does for you is give you lots of interesting information about a component when you hover over it.  But not having to type Adminstrator [sic] anymore to connect to SonicMQ is good enough for me!