If we manage to get howson and Ayala down from a combined 50k to 16-20k that will be a massive difference. Pretty incredible as I would imagine they have the chance to get more elsewhere when their contracts expire. Extend those two alongside Spence and let the rest expire. Should set us up nicely for a clean slate in the summer.
I'm currently reading the graphic novel, up to Volume 4 (out of 8 ) so it might take a while. I'm guessing the TV series is massively toned down though, some of the content of the graphic novel is just insane (but that's Garth Ennis for you!)