ANYBODY that complains about IED's needs to put their copy of Ghosts in the garbage and go play something else.
They have already made them laughable at best, by decreasing both range and power. Now if you play Core, you almost have to run Danger Close (4 points) to get a kill with them. There are PLENTY of ways to avoid them here is a list ---
1. Sit Rep. Most beneficial perk in the game. Lets you SEE where players are camped, Lets you see ALL enemy equipment, and acts almost like a full time UAV.
2. Blast Shield. With explosives in this game being so weak (especially Core where I have seen grenades land at peoples feet less than 2 feet away and blow up, but they live even WITHOUT blast shield) this is almost an anti-explosion perk which lets you stroll through EVERY explosion in this game.
3. Agility. Most people who use this, use Marathon as well, and lets you zoom right by them after they blow up.
It seems to me that the players who complain about IEDs are the same ones who REFUSE to use any perks other than the same 5-6 that they run on EVERY class and complain instead of adapting.