Actually, I think it's terrible in it's current state. I made a second account to try some heroes/practice heroes on. Recently they changed the number of reports to four per week, but I almost need to report a person per match for either feeding, afking or really bad language. I realize this is in the 'normal' bracket, which is still pretty terrible.
You might be consistently impressed, lately I have been consistently disappointed by the Dota 2 community.
Great post and most of these steps are really helpful.
The only thing I'm not too sure about is step 11, discouraging of IDEs. I do agree with your point that one should not depend on a IDE. However, IDEs can give you autocompletion, easy refactoring, finding references etcetera. Personally, I find some of these features invaluable.