First of all everyone that had watch The International would have know that LAN function was removed/not added into Dota 2. Many players are complaining of how lag it would be and etc etc. I have thought of the main reason why lan is not added into Dota 2. To prevent piracy, because if lan was added... Dota 2 would just be like WCIII, pirated. And icefrog/valve would not be earning money.. Tl;dr ; would you want the LAN function or not?