Scourge Queen prestige is interesting and feels like the most Zagara-like imo, but it has arguably the biggest disadvantage out of the entire prestige set.
Current disadvantage: “Zagara is unavailable” makes two entire mastery sets to be completely useless because there’s no Zagara to benefit from the first set, and there’s no alternative method to use frenzy and roach drop.
Scourge Queen is the only prestige that makes an entire mastery set completely useless, let alone two.
Also, removing hero unit is one thing, but it also removes top bar alternative.
Kerrigan’s “Desolate Queen,” on the other hand, gives two alternative skills to compensate for removed leaping strike and psionic shift, and lets her keep the immobilization wave.
On top of that, the advantage it’s supposed to give is completely meaningless at low levels.
Both the scourge nest and baneling nest does not spawn any free units at level 1, and additional zergling doesn’t spawn on level 1 neither.
It seems like the free scourge+banelings are supposed to unlock at level 7, and additional zergling at 13 with Swarmling, which makes her low level even worse than non-prestige Zagara due to lack of Zagara hero unit.
Lastly, having to pay 6~700 minerals for the additional 50 supply feels bad, because this is THE only advantage that is not tied to disadvantage that require resource to unlock.
Overall, prestige is very unbalanced in my opinion, but this prestige has the biggest hidden disadvantage compared to every other prestige currently available.