BiS Lists?

Sup,

how come there are only ICC BiS lists? Googled a while and still didnt come across a List for T8 for example.
Im playing on Frostmourne which is currently on Ulduar Patch and im at the point where i can respecc combat, or at least use it for some Cleave fights, but im not entirely sure what Gear to use. Especially Trinkets.

As Assa i use FFF+DMC, but i also have Grim Toll. So, do i swap a Trinket for it? Like Grim Toll + DMC, or is FFF+DMC in general what you're using, even as Combat? (till you have Ulduar Trinkets)

Cheers