Since Mercenaries are often employed to protect Traders or even people of other guilds, I'd like to see an ability much like Protector's Vow, maybe a bit less effective, for Mercenaries to acquire. Of course, this would passively raise the chance to intercept attacks while guarding someone, thus making the guardian in question just a bit more effective than someone without the ability.
My reasoning for this is because last time I went somewhere with a Mercenary (of pretty immense skill, mind you), my character was nearly killed. Now that would be fine and all if my character wasn't being guarded by a masterful Mercenary in plate armor, I think it was, but it seems kind of pathetic for a member of said guild to have their employer nearly mortally wounded by NPCs that the Mercenary has no trouble with otherwise.
"Hired Sentinel" Ability Idea
"Hired Sentinel" Ability Idea
"Gentlemen, all I ask for is war. A war so grand as to make Hell itself tremble. Gentlemen, I ask you as fellow brothers in arms, what is it you really want? Do you wish for further war as I do? Do you wish for a merciless, bloody war? A war whose fury is built with iron, and lightning, and fire? Do you ask for war to sweep in like a tempest, leaving not even ravens to scavenge from this Earth?!"