My general thinking:

If prasad has the intelligence that the solars are embedded in the city state with significant defense buildup in progress then a strike team would be an alternative to a lot more costly/risky frontal assault by a legion backed wild hunt.

If the strike team can’t deliver the wanted results then the full wyld hunt with a legion or two could be tasked with removing this growing threat.

If they only know there are some solars in an independent political entity, maybe send a spymaster to help a strike team locate and allow for a surgical...