Matches on arena maps are so fast that it doesn’t even feel tense when you have no lives. The game actually never last long enough for the circle to get close. Maybe for Onyx its a different story, but the casual player base will end matches much faster. It just feels like a normal game.
I think having the map be on BTB map instead of Arena will actually make searching for enemies much more intense and encourage players to stay together better. That way, the circle can actually force a lategame fight sooner before the match ends.