Yep most of that stuff is already done. Try it and report back - I'll sleep in the meantime (it 's 4am here)
Btw. my solution with hooking d() is probably better then just disabling all System-Messages with a Chat-Filter or?
ERWKLJR I really need to sleep now. /brain shutdown
Edit:
Also don't worry about the technical stuff - it 's additional functionality intended for Addon-Developers for more proper Debugging.