I understand the logic, "FULL TANK BUILD" doesn't neccessary mean picking exclusively tanky talents, when another option is obviously better in it's tier, and not costing you too much survivability. However, Hardened Shield is one of the best tank talents, and so I am not sure if I could excuse the bonus damage and slow taking it's place. Nexus Blades is a cool talent, don't get me wrong. The problem that I see, is that picking it, you miss too much survivability that Hardened Shield would give you, and gaining something that goes outside of your primary role. Depending on team compositions, maybe I'd find a good excuse to pick it, but that's really way too situational. That's all I'm implying.
I understand it's your preferred choice, and that's perfectly fine, but it would be good to have an objective approach in your guide, and say that you're picking it because you like it more, but mention Hardened Shield as being the primary option for at least the "FULL TANK BUILD".