We've had a few modifiers for exploration but this hasn't come up in my group. I'd default to saying 'no' but it might not take too much to be persuaded to say 'yes'. We also allow for post battle sequence dice modifiers to be used in other aspects (possibly another idea suggested by Lord 0 or others) such as changing the dice when rolling for what is found in 1 1 1 1 (Gunsmith).