Thanks for your elegant design. One question though :
Let's say a character with only two "regular" dice left in her pool besides her stress dice, is (1) not injured, (2) trained and (3) has the upper hand. Since she only have two "regular" dice left, does she "may" or "has to" roll her stress die too ?
Is it a player's choice ? (the rules imply the stress die is rolled only under stress, to resist outcomes, or being the very last die of the pool).
Thanks again for sharing.