Valour allows for some insane damage spikes with ranged rogues. You can either one-shot or very heavily damage most non-superboss (Ethel, Grym) enemies through a combination of a high-ground sneak attack with advantage (for maximum accuracy) and the damage bonus from Combat Inspiration, poison (preferably wyvern poison for the nastier enemies), bracing, and having the gaping wounds effect on your target. If you roll a critical, they're toast. Although it really suffers from how borked the implementation currently is (you lose the inspiration die for damage if your attack misses, for example). It would work well with melee heavy-hitters too, but it's harder to guarantee a hit since you can't get the high ground's +2 to attack.
