You should really try to promote this map to make it succesfull in the competitive scene. This wouldn`t be selfish, because you deserved a bit of attention. You made so many Fans favourite maps, this could be the next very big thing. Contact some big youtubers and streamers and ask them kindly, if they can playtest it and give their serious opinion on it. Like ValveNewsNetwork, WarOwl, summit and so on.