Urgh, it's just a pissing match between battlefield and IW to see who can make the most things explode persecond. MW2's problem wasn't that they didn't try hard enough to be epic, it's that they tried far, far too hard. They need to tone it down.
Edit: I can't see anything good coming out of this in terms of multiplayer, I've played lots of destructible environment games offline and offline, and don't particularly like any of them. Although technical limitations explains a lot of my complaints. Also, if you have TF2, look at the developer commentry. See how much thought, work and care went into every detail of every map. Destructible environments ruins all of that. Not that there would be any care or thought other than "That would be pretty sweet" into any of the maps. But it still ruins it. It ruins everything they know of map designing. They need to adopt a different approach to accomodate destructible environments, which I really don't think they can pull off.
thinking more about singleplayer, do we not have enough things exploding already? I'm going t oreference Yahtzee's review of Crysis 2 here, he mentioned that every time a building blew up it had some impact since they weren't falling down continuously since the start. CoD is the opposite of this. Where everything blows up. All the time. Making even more things blow up won't have any impact on the player, but on gameplay? Might ruin the cover based rail shooting that they usually adopt. So lets hope they can change their style there too.