C4 Idea...

Well I read a post about defusing and it talked about defusing at different speeds depending on rank and I though that was not a good idea personally. But What I do think would be better is that you have some sort of stat that stores how many times you have defused/planted c4 and as you defuse more you become more experienced at it and realisticly quicker at it. If this idea is brought in I think the speed defuse should be nerfed to keep a balance. What do you guys think?