I think whatever they will release next will be their last record. Call it Man and make it a killer album. Then take it on the road, arenas, small venues, blow the roof off every night, they don't need to go big again, they can't get bigger than 360. Elevation was such a great tour, it's obvious from every show on dvd.
Then once the arena shows are complete they should play minimal shows outdoors, major cities, finishing off in Dublin playing 3 final shows at Slane Castle. I can dream can't I?