Devs: Please look at the "Companion's Might" trait.
I agree that Companion’s Might needs a slightly, but only ever so slightly duration increase. If you are set up for high crits you can stack around 5 to 6 in my exp sometimes more. I think somewhere around 1.5 to 2 would be a good spot. 3 to 5 seconds is just way too long sorry.
IMO it works fine with fast weapon or aoe, I get constant 1-3 stacks. However it’s a waste of time with longbow, so would be nice if they increased the duration and maybe set a stack cap of 5 so it’s not op