Rankings is a soft version of parsing, which isnt to bad an idea. But the problem will ultimately be the same: At some point itll be a tool to bludgeon others with.

"Oh, you dindt get S rating on 'x','y', and 'z'? Youre trash!" /votekick.

While I dont think that that will happen a lot, you can expect it to happen enough to be noticed. There was an argument someone put forward stating "Only a microscopic handful of people with parsers talk trash. Most people want to be nice!" And I agree with that. But what they failed to acknowledge was that adding parsers to teh WIDER majority is going to substantially increase the rate of abuse proportional to the population. So if 500 people had parsers, and only 50 of them talked trash, thats one thing. When it goes live, if proportions hold up (which they will likely do), that number goes from 50, to 500 if the player base is 5000. Thts a lot of people.