Seroiously this is the cheapest nuke idea I've ever seen. Drop over commander, who needs any other units because Manhattan is a fully functional nuke and the helios has damaged the commander enough for nuke to kill in one hit. What's the counter? Stop the Helios or destroy the manhattans inside where ever they're being manufactured, neither of which are particularly simple. Not saying I don't love it, but why drop anything else from a Helios to end the game?