I've never understood the fundamental argument against the so called Nuke spells. They are designed to counter massive blobs and deathstars, yet it is argued that they do not. Surely that means that they need to be even more powerful, not less so?
In any case it doesn't matter to me. I have only seen a Nuke spell cast once in all my games of 8th. Dwellers beneath to be precise. Killed precisely half a Clanrat unit (40 strong) and a Warlord. Hardly game ending. That is because my opponents and I don't deathstar, and neither do I. I never sink more than 350 points into a unit. Doing otherwise is just asking for trouble.