Most T1 controller could replace Zombs and don't bring up his clutches because most of them could be done by the likes of JcStani or another good controller imo
the chemistry is good which would be hard to replace doe
so here's the thing with making a change. It COULD make you better but it could also make you worse. And when you're already the best team in the world it's much more likely that it'll make you worse. Also who exactly would replace zombs? There aren't many fragging smokes players.