Some of you might want to check this game out. Its not a replacement for the LoL/HoN/Dota games but you guys might like it. Basically arena matches of these games. No laning, no farming, no buying items(in game anyway). Just a straight death match and what makes it more fun is its all skill shots, including healers. Matches are 3v3, 1-2 mins long, best of 5.
If you do start playing make sure someone sends you an invite. If someone invites you, you get 5000 free coins, which isnt a ton but its nice to start out with. The coins are just like other games. Buy champions, alternate costumes, talent trees, etc.