[X] Reassure the People of their safety and prosperity (+1 Stability)
[X] Magwyna (-1 Stability, other effects, [Poor Martial, Heroic Admin and Diplo])
[X] New Trails (-1 Econ, +1 Diplo, +1 Centralization, other effects)
[X] Take in some (Chance of stability loss, +2 Econ)
Ok guys, I know everyone's first instinct to keep our stability up would be to use the Grand Sacrifice, but we need to connect trails to the Stallion Tribes yesterday, and we finally have low enough centralization to not put ourselves at risk with New Trails. Also, Grand Sacrifice is a button we've already hit a couple times, and I'd rather take a stability gaining option that comes with no cost, even if it doesn't raise our stability as much. The +1 Sability does leave us short a potential tech upgrade, but it doesn't cost us any Econ, which we need to be more cautious about spending now that our Baby Boom is over.
As far as I can tell from the options presented, the only ways to help integrate the Stallion Tribes this turn would be to either do New Trails, or take a leader who will likely try to sink whatever progress we've made towards gender equality down the toilet. The cultural gap between us and the Stallion Tribes is only going to keep growing the longer we put off integrating them, and if we keep putting this off too much longer I wouldn't be surprised if Attrikwyn and the Stallion Tribes break off from the People altogether. If it does come to war between us and the ST, Magwyna isn't going to do us too much good with her poor martial, so I'd rather solve this issue peacefully and quietly with New Trails.
I'll admit my current vote is a bit on the conservative side, but worst case scenario it takes us down to 1 stability and gives us 1 econ. I'm pretty set in stone on voting for Magwyna and the New Trails, but if someone else comes up with a good plan that involves both of those, I'm willing to change my vote on the bonus and refugees.
EDIT: Fixed math