When you use cleave attacks like Cleave, Great Cleave or Supreme Cleave, Boulder's Might etc there's no chance you'll doublestrike. It's simply incompadible with the current mechanics. I would like to see that cleave attacks would be made possible to doublestrike one of the enemies that your cleave hits. Your main target would work fine. Like adrenaline strikes form fury of the wild destiny. If you cleave after you hit the adrenaline only your primary target gets hit with the adrenaline buff. I would like to see something similar with doublestrike. I don't really now if that would be too powerful though or how it would affect game balance.
Thank you.