Anyone hit in the splash damage cone would be set on fire as if hit by a flame thrower. Direct hits would still gib, but anyone outside the immediate impact area would suffer fire damage, perhaps in varying degrees as to their proximity. So instead of being killed and knocked across the courtyard when you get mortared at spawn, you lose a chunck of hp and run around burning, losing further hp for for a few seconds (same as if touched by a flamer).
I'm not sure how you'd impliment it, perhaps awarded it to level 4 soldiers (panz & mortar)? As I said it may not be a workable idea, but it could be very fun for bayonET
