We've seen that an additional moves pack will be made available as a DLC so why not move into another area of the game and have an additional arenas pack? It remains to be seen which arenas will be in the new game, although the matches in the Stone Cold Steve Austin mode - which have been heavily rumoured and not yet confirmed - will tell us more. Nevertheless, no matter how many unique arenas are included in the mode - and the game's other showcases for that matter - there will be a plethora of classic walk ways that will be in demand for the new game. The roster is so deep in this year's game that many of the stars are crossovers, and will have appeared on a number of different sets that could qualify for such a DLC. It just makes sense and would add another luxurious layer to the game.
