Even if you would want a level hack, chances are it's going to be extremely hard. EA and Dice arent as stupid as activision/infinity ward. Not to mention the lack of interest from a hackers point of view, MW2 CAN be hacked, now they'll just be figuring out how to do various things, and IMO it will ruin the game when they sucseed, whereass BFBC2 hasn't been hacked yet, and NO-ONE will know if a level hack is possible so it's highly doubtful they will even try.
If YOU want a level hack why don't you try and fwork towards finding one? But honestly if you do find one please for the good of the game don't release it