The brawl map of the week for Heroes of the Storm is Lost Cavern, HotS’s version of LoL’s ARAM. In many ways, it solves some of the problems with both HotS and ARAM.
The basic problem of HotS has always been that minigames trump laning and fights. ARAM removes any objectives except team fights in one lane.
ARAM is as random as the name suggests. Lost Cavern lets you pick from three heroes and shows you team comp while you do. Controlled randomness, rather than absolutel chaos. You can still win and lose on team comp, but not utterly and before the game starts.