Skuzzy,
Not sure about others, but moving System messages to another tab doesn't help. I want to see some System messages -- field captures, kills, icon setting, etc. -- but the "mode" messages are filling the buffer and they aren't useful (to me). Since I use mode switching to add views to the hat, I'm changing modes 10 times a minute when close to enemies -- much more in a dogfight.
If the "mode" messages were tagged as "Help" (or something) instead of "System" I could turn them off without losing anything I need to see.
I certainly can live with a buffer full of "mode", just adding my +1 to the wish.