Heavy's Lighter Fight: Arena Mode

The Heavy update info-flow continues to inundate us, this time with information about Arena Mode. But what's Arena Mode? "Arena features smaller maps that play out in shorter periods of time. The round ends once one team has no players left in the arena, or when the central capture point has unlocked and been captured. Rounds tend to be very fast and highly competitive, with an emphasis on your team’s class makeup and your plan to counter the opposing team’s class choices. Arena mode is great for smaller matches of three vs. three players, while still comfortably supporting huge knockdown twelve-on-twelve brawls." There are two new maps for this, and a couple of reworked areas of previous maps. Sounds interesting. But what do you think, opinion-persons?