All this discussion begs the question, Stadiums or Arena's for 2004? Or maybe a mix, depending on the demand in the city their playing. Another question would be ticket prices. How much higher do you think they will be?
With the bands new level of popularity, I think they could easily fill up stadiums in most markets in the USA with a single $60 ticket price. Of course this is still dependent on how well the album, probably released in fall 2003 is recieved. If the reception is equal to or better than ATYCLB, I think we will see stadium shows in the USA and of course Europe. I'm thinking they will go for a mix though of Stadiums and Arena's similar to the Joshua Tree Tour. If a market is deemed to be still soft, it will get an Arena show instead of a Stadium.
But Stadiums are a hassle and Arena's are easy logistically and the profit per ticket sold, much higher than the stadiums. So they may stay inside the Arena's which means will see some higher ticket prices. Maybe $50, $90, $150. I don't see it being to much more than Elevation, but it will be more if the show is inside an Arena.