Getting an S with tanky junglers

I like the implementation of the new grade system but I have noticed an issue when jungling. If I let my laners get the kills for early ganks, take every objective (multiple dragons and towers, rift, and baron), and end up with moderate CS (like 150ish) and score (6-1-9), I'll never get an S rank on a tanky jungler. I say never loosely bc you CAN get one but my point is that if you pick a role that is based around objectives it is a bit more difficult to achieve an S rank if you focus on those objectives. The jungle has less CS to clear unless it goes to late game and ideally giving your laners the kills helps them in the laning phase more than me (most of the time).

My question would be this... Does anyone has any ideas on how to incorporate objectives taken by the jungler into said junglers' grade (and only the junglers grade) at the end of the game because currently objectives are insignificant in terms of a junglers end game grading?