I had problems introducing my coworkers to this game because of the lack of LAN option. Being a fan of DoTA, everyone here loves LoL's art and overall ideas but those are not good enough reason to install it in their house and play online together.
For i think 2 years me and my friends have been playing DotA. Now i ditched DotA for LoL, they all give me **** about it, but i now convinced 2 people to play.
Getting my friends to play would be so much easier if there was a Lan feature as i have lan parties with my mates every so often and all thats played is DotA and other fun custom maps that warcraft 3 has....