I presume that the total destruction is only limited to the online side of the game?
I could imagine if you can do this in the single player, the orbs would probably stay floating up there, trolling you for being so destructive.
Crackdown was one of the surprise hits for me on the 360 (I only bought it for the Halo 3 multiplayer beta, which I never used as I was so addicted to Crackdown.) Spend a lot of hours on the original and it ended up one of my favourite games on the 360. To my shame, I never got all the agility orbs, as I was missing 13 of the bloody things.
Will the original be on the BC program as well?
This game may be the one that finally make me crack and get a X Box One. By the time, the other exclusives should have dropped in price massively. Here's hoping, anyway.