I don't want to disagree, but I'm gonna play devil's advocate.
Let me know if any of these characters I will name are currently less equipped than Kotal to deal with the cast.
Lao, Jax, Sonya, Sub, Mileena, Takeda, Shinnok, Kano, Johnny, Liu, Reptile, & D'vorah.
These are just 12, and I eliminated some that are debatable such as Pred, Ermac, Kitana, Scorpion, Cassie, Kung Jin, and Quan.
Currently you are right that Kotal is definitely the best he has ever been. And he is a very good solid character. However he has several major weaknesses that hold him back from being fearless such as other top characters. He gets zoned out by at least 7 characters, has holes all over the place and has trouble successfully baiting his holes off b122, f1b2, d4, f34, and worst of all b14, these are his 2 biggest issues. Many characters don't even have weaknesses.
He is a great character right now but simply by definition if there are 10+ characters better than Kotal he can't be top 10. A strong argument can be made for top 15 that few would even think to disagree with.
I would like to end saying Kotal is in a great position right now as a king of upper mid-tier. Saying he is higher warrants debate.