S ranks to hard to obtain for tank junglers..

im a D4 player who mains jungle. i mainly play tanks cause nobody else does, i find that i rarely obtain even S- in games simply because i cant take kills or get an excessive amount of cs since both are much more valuable to carries. it would be very nice if the value of assists on tank junglers went up so i could obtain those juicy S ranks and not get A+/- every game.