i don't agree with Midgarsormr and Warring Lanner, the other stuff: yes please! especially Thunderer for Twintania

Midgarsormr already plays Borderless - yes, it is the standard HW mount song, but it also is a remix of Primogenitor, so it fits.

and the Warring Lanner plays the song of Phase 1 of the Sephirot fight, wich is a nice song :O