I don't know about you but when I are playing a team of riot sheilders who use C4's as this primary weapon, it just makes me UPSET. It is totally unfair and a stupid strategy. I really feel that the call of duty developers need to make the C4 just like the IED. If you don't know what the IED does, it takes a few seconds to detonate after being thrown. The same should go for the C4, just a 3-5 second delay and I guarantee all our problems will be solved. This still won't take away the viability of the C4 or the riot shield. But it will discourage people from playing like this.
Please let me know if you agree or disagree by commenting below. If we get enough support we might be able to make a change