You know what pisses me off most about IED's?  
You can't shoot them to destroy them.  That is totally stupid.  In 007 I could shoot proximity mines or claymores in CoD4.  My favorite thing to do with claymores in CoD4 is to stick them right by a car so when somebody triggers them the car explodes and kills them for sure.  Sometimes a claymore won't kill them alone.

What does IED stand for?

yes, but usually in levels with corridors the carrier of those things can't see much people at the same time,
which makes avoiding easier.
Apart from that i agree, rockets should have the same blast range. Especially the Carl G rocket launcher. You can remote control
those rockets, but they're weak; if they don't hit the target itself, it won't die cause of the small blast range.

I wouldn't consider this as relevant. The real thing that gives the carrier an advantage is the fact that
the remote control will never jam or loose the signal or something.

I think IEDs blow up if they are rammed by a car. (Not sure, but one time I put a IED on front of a car and rammed another car, and I blew up.)

I wish they would blow up when shot.  That's a bit ridiculous when you shoot them to bounce them away from you, but they never blow up.  I especially hate when people camp the diamond stations with IED's.

They do blow up when you shoot them......in my experience they do anyway. Or do you mean just your own? I rarely, if ever, use them so I wouldn't know, lol.

That seems about right. I do wish you could throw them though... You can throw grenades, but they're pretty weak, don't go far, have a small blast radius, and usually don't go off if you die before they explode.

Still, IEDs are hard to use for me 'cause I don't go suicidal and otherwise you'd need to be just watching the area you put them. (camping) Which is hard for me to do, 'cause I just gotta keep moving at all times...

I swear by (and at) this method - it never fails