The intention for the event was for the players to pick one of the heroes, my idea was to be able to let you guys choose the login hero and that's what happened. We ended up adding the other 2 to the game but the Sage guy was the least voted one so we left him out.
I remember seeing him in Dot Arena, but this is a good question. Since they asked whom to add, they had to have him ready to be added unless they screwed with the voting system to make sure he won't be voted. Very strange that we never got him indeed.
We never touched the voting system, why do we have to have him ready just because he was an option?