I myself would like to see them return. I think it would add a little more to the game and bring some more D2 feel to it.
On a side note the general design of them seems to be lacking a bit. After you get pass perfect they just start looking the same only bigger with some added lines. I guess there are only so many ways to make a gem look though. In the end these are all just really small points but I think they could help polish the game a bit.