I would've agreed if the Gorosei were pillars of Imu's 800yrs regime, and were present during the void century
This page kinda proves they're mortals
So to assume these 5 replacable old men all happened to awaken their god zoans, and that in 20 years there will have to be another 5 who eat these fruits and do the same thing doesn't really make sense
The title wasn't used because they're the first warrior CDs introduced so far, let's see how its done for the Holy Knights
Tho I must say, if Imu is as busted as I think she is and can grant the Gorosei powers of her own, or if they are accompanied by the Seraph in the final war, then can definitely pose bigger threat than the top tiers we know