Alright here's what I think about the care package glitch. There's no way that holding a care package marker, with a gun on your back makes you run like a spawn of Flash and a cheetah.
Why don't they just make you have to put the marker away before you knife? There wouldn't be anyone running around because they would just die so easily trying to get their marker away.
It's a pretty simple glitch fix and there's nothing really hard about it.. Just make them have to put it away. I mean when you climb or go up a ladder you put it away. Why not just make it go away when you try to knife?