I too, would very much like to see this Quincy arc rendered into anime whether we have to wait another 5 years or more. If it was, then it could help fill some details they deliberately avoided, such as the epithets that they never revealed, like BG9's K, Robert Accutrone's N and NaNaNa Najahkoop's U and the names of the Quincy: Vollstandig that the other Sternritter have used but not been named. Plus, left as it is, the anime refers to the manifestation of Ichigo's Quincy powers as his true zanpakuto, which is highly inaccurate with this arc revealing the true nature of Ichigo's powers.