I do wish they would buff the other superhybrid like Scaphotator and Majundaboa, and other epic hybrids like Dimodactylus and Amargocephalus. These can all become counters to Sarco. Scapho with a bit more health and swap out immune, Majung with more health and SPD decrease immune, Dimo with more health SPD decrease immune, and Amargocephalus with more health and Atk. Also, a damage buff to postimetrodon and gorgosuchus can also make them a counter.
Sarco may be a little bit too strong, but a load of epics are also quite underwhelming, so why not ask for a buff to creatures rather than a nerf to another. I do plead guilty of using him, but he is the creature that helped me the most against quite a few of the boosted Legendarys in 2400 cup arena, so my team would be striked hard if they do decide to nerf her, especially with their ‘oh it is op let’s nerf her to the ground’ type nerfs