Honestly how would Viking be different from Warrior? Warrior already has berserk, uses storm themes for attacks, and has a resource tide to battle fury/ adrenaline. As for my own suggestions for Tank jobs (what ever that's worth).

Defender/ Crusader: theme - Warhammer Warpriest




Templar: theme - FFT Spear & Shield, various sources







Mystic Knight/ Rune Fencer/ Necromancer: theme - Guild Wars Dervish/ FFXI Dragoon, Stance changes pet actions DPS adds DoTs, Tank Adds Hot/ support





https://www.tapatalk.com/groups/nwne...psf4f69a7f.jpg





Soldier: theme - FFVII/ FF Dirge of Cerberus/ FFVIII, augmented troops/ Gun Blades (because something needs to pull in DPS from RDM and SAM)