Offloading bass to powered sub means smaller external amps can be used and usually means better performance and dynamics all around.
It's a very practical and cost effective approach that should appeal to many.
Some very good points. And optional would be key for the 1000 to 5000 line, otherwise Ohm would price themselves out of the "giant-killer" affordable market.
As you know, I'm looking to buy a set of Ohms, I would hate for them to move to a higher price point across the board.