FWIW, you have pretty fine grained control over what appears in the console (CSS, JS, Logs, etc.) as well as the level of logging (Error, Warning, Log)... see the dropdown buttons at the top of the console tab :)
True, but default choice is SPAM WITH CSS REFLOWS, YAY!
EDIT: Another thing, there needs to be a font shape difference between input and output. Basically, you should be able to tell if something is input or output without looking into the arrows to the side.
Personally, I think that console could do some work. Chrome console is top notch, and there is too much noise in FF version, with CSS and other stuff.