Now this update to the flier rules brings about some interesting changes to 40k, some good some not so good. But I feel we should really look at how they affect us Sisters of Battle players because it kind of means that for some lists we will need a flier. Mostly if you are using Seraphim for deepstrike or Dominions for outflanking, because the +1 or -1 to reserves can really make or break the game. As well as the other things that the supplement adds to the game.
From what I read of it, it seems that anyone can take a flier and that they have their own special detachment slot thing for just fliers. So they no longer fight among other units for types for that slot. They are no longer fast attack or heavy support, they are just simply fliers or detected transports if the conditions are met for that.
It also seems like pretty much any flier in the game can inhabit those slots, even if it isn't of your faction. I could be wrong about this but from what I read and took away from it is that I could throw a tau plane into the slot even if I am not tau. So by extension the Sisters of Battle now have access to Fliers which was a huge complaint by some people about our army.
So now that we can seemingly take any flier this opens up a bit more options in list making that doesn't involve taking allies and having to take less optimal units to fit in a decent flier or two. That tax on list making is now gone completely, which is fantastic.
Now excuse me while I take a deeper look into this mandatory supplement. I'll post more when I know and understand more about it.