OK, if you're (IW/Activision/Microsoft) not going to clamp down on the CP glitch (or you haven't figured out how), at least add a postmortem routine that:
A) Checks to see who used a care package in the game,
B) Adds up the total number of kills that person had,
C) Divides that number by the number of care package markers thrown,
D) If the resulting number is less than 4 (or 3, if perk 2 is Hardline), then
E) That person gets a 1-week ban from XBL
F) Almost every game mode is resurrected, and people start liking MW2 again
For A: B/C < 4, you're fucking 86ed, (B/C < 3, you're also 86ed, Hardline a-hole)
It's a simple six-step plan. I feel like Ross Perot.