I think it would be awesome to have 16vs16, but I don't see that happening soon. Plush they would have to make the WZs maps bigger.
Not true! In beta, we had 12v12 (or possibly 16v16) CW's all the time. They ran fine imo and were a blast! There's no reason we couldn't do larger WZ's. AH, CW and NC are all large enough for 12/16v12/16.