I'm reading the 10e Greyknights Codex and damn it's pretty dire for them
>2 of their 8 Grandmasters are dead or missing I'm action, 1 got confirmed merked by Angron
>Most of the 8 brotherhoods are suffering sever man power issues
>One is at a third of it's strength
>The Silver Blades which is where recruits are first sent to are losing more Grey Knights than they can recruit
Of all the factions they're probably the worst off right now. They ain't taking on the Custodes anytime soon