I say the nades in game are just fine... note... if you go prone when a nade is near... you have a better chance of survival... it actually does kinda work like a real nade...
I've been killed by greneades that I thought were to far away to kill me and I've thrown grenades that I thought should kill people... I like the way they work in a kind of random fashion... sometimes you get a sweet toss... and sometimes you get a bad bounce and kill your teammates... either way they work and they're fun as all get out.... I think they kinda work like grenades worked back in 1942... now that's sweet... don't change a thing if you ask me....
"Oh yeah drugs...you gotta have drugs..."