It's possible, but it seems more likely that it'll just be parallel to the 3 Sweet Commanders. When a Headliner can be as strong as a Supernova, there isn't really any reason to have more than 3 All-Stars. It just needlessly lessens the role somewhat IMO when you already have a position that has characters with wildly varying amounts of strength.
Yeah, but what about the Daifuku, Oven, Perospero and the likes on the Beast Pirates? The Big Mom Pirates had a lot of monsters who were not among the Sweet Commanders but clearly the Headliners are not going to be around that level (we already saw Holdem, the headliner immediately below Jack, and…).
A headliner being as strong as a supernova at this point apparently seems to be exclusive to the headliners who are a supernova, as every other headliner we saw so far is leagues below that level - and the supernovae are not real real real Beast Pirates, they are just a temporary addition, Kaido's crew can't seriously have just him and the 3 Calamities as threats.
Even if we have more All-Stars, we'll still have the 3 Calamities to be a parallel to the 3 Sweet Commanders (and even the SC were actually 4 until a while ago). Actually, we always thought of the Calamities as being the Sweet Commanders equal, the term All-Stars only appeared a few weeks ago.