This has been mentioned before, and many members--including me--did not see the merit in it. Also apparently, it's been mentioned before that.
In a nutshell, the recommendation was to create a seperarate forum for common errors/known issues pertaining to entities, and other mapping problems.
Perhaps instead, adding user comments to the Entity Guide pages? More mods for that too, I guess, to weed out redundancy, misinformation, and so on.
After enough time, comments could be used to create a more comprehensive Entity guide.
Clicky for a brief example.
Would in a way, kill two birds with one stone.