This has been suggested so many times. I still agree with this, though I think they should also be awarded for fully overhealed teammates. Full overheals don't last all that long before they start to fade, he would still need to be near them to net the assist.
Pretty much. I agree with the idea, but perhaps some people think Support has enough means to get loadsa cash already or something. I just wish there were more ways to reward that sort of teamwork. :|