The supposed final arc has been going on now for various chapters now and we have seen many people fall both Quincy and Shinigami. The Shinigami have lost immense fighters in the form of Head Captain Genrusai Yamamato, Retsu Unohana, Sajin Komomaru etc..
however the Quincy's have also lost valuable assets like the Masked Hero, As Nodt, Cang Du, Bambietta, Gunael and inevitably Gremmy.
With more and more Shinigami unlocking new found powers - Rukia with her bankai or Renji finding the true form of his bankai - I find myself wondering how the remainder of the arc is going to pan out.
Out of all the Quincy's left there are a few that are seen as threats to the top Shinigami left. There is, obviously, Juha Bach; Haschwalt; Askin; Bazz B; the two Quincy's seen arguing over who is the C rank; the unknown hooded guy; the old man, who took out Shunsui's eye; Pepe and NaNaNa. Right now I am considering Ishida as an ally of the Shinigami but this might have changed.
I feel that these are the battles that will occur through the remaining chapters:
Ichigo vs Juha Bach
Byakuya vs Askin
Renji vs NaNaNa
Shunsui vs Haschwalt
Ukitake vs The Hooded Man
Urahara vs Bazz B
Chad vs One of the lower Quincy
Inoue vs One of the lower Quincy
Ikkaku & Yuminichika vs The old man
As well as this I believe that Yuminichika has achieved bankai as well as Yachiru, Nanao & Hisagi