In the latest collection of short stories, Mab calmly lets Molly know that if Molly wants the tithe/tiend stopped, she has to work out how to end the war with the Outsiders.
Brutal, but fair - and raising the question: can the war be won?
The Unseelie protect us from the Outsiders, the Seelie from the Unseelie, so there is the depressing possibility that there is something even worse being held back by the Outsiders, making a true victory impossible.
But assuming that is not the case, or allowing for the possibility of becoming strong enough to take on the new threat:
- Mab doesn't understand technology. Introducing her to 'ferromancy' and the force multipliers thus available could be interesting. Trolls armed with machine guns would be a game changer.
- domains can be created within the Never Never, with their own powers. Could micro-domains bec created at the borders of reality, using those rules to create weapons? Say, a domains that the piles of bones could fall into, keep falling until their speed is many multiples of the speed of sound, and then leave the domain, directed at the advancing armies of Outsiders.
- Mab's armies are probably constantly being driven insane by the Laws: they'll be racking up large amounts of knowledge of the Outside, for one thing. Granted that few of the troops will live long enough for that to be a problem, but (hopefully) some do, and if not improveed weapons and armour will change that.
A useful IoP would be one that the Outsider could put their Lawbreaker levels into, loaning them to newbie troops to help the youngsters survive, and allowing the veterans to keep their sanity a bit longer.
Anything I've missed?