Stan is no longer igl, he was never great in this way. I don't say he was bad at it, but he never made correct preparation for games.
His midround calls was fine, he tried to do less mistake, also invented some EU tacs to NA.
Overall, he never had a big impact on igl role. Old optic won over astralis anno, becouse nath and mixwell was overperforming and tarik rush were putting a lot of hour to the game/day.
Liquid is got better, becouse with -hiko, elige got a bit more space, and also they got twists, who is talented, and usually have a big impact. ( Also the 2 win over sk was under the igl of Nitro.)
I can't follow the lower NA scene, but I am sure, there is somewhere a glave or fallen, with the gameknowledge and with/without the fragging ability.