When I was reading through the „Obliteration“-Faculty, It occured to me that those two feel counterintuitive. Just fyi: unstoppable nanites add the boost property and Penetration, flashing nanites reduce the penalty making full attacks to -3. Using the boost property takes a move action. The Unstoppable Nanites abillity lets you expand a Nanite Surge to use the property with weapons that dont have charges, and using a surge says:
„ A number of times per day equal to half your nanocyte level plus your Constitution modifier, you can use a nanite surge to push your nanites to perform extraordinary feats in certain situations; the exact benefits vary by circumstance and are explained in the abilities below. At 5th level, you can spend 1 Resolve Point to gain and immediately use an additional nanite surge. You can use this ability multiple times.“
Makes me wonder, if you can avoid using a move action by expending surges.