Actually, I think that 'first step' (the defendant legal costs paid by the troll) seems, in my uninformed opinion, to be close to what we call here (in France) "comdamnation aux dépens" where the loosing side (attacker or defendant) may be sentenced to pay the winner's costs (added to the main sentence).
I didn't event realize that may not exist in other countries. But of course, it's a bit of a double edged sword.