I'd like to request that SRFI 121 be formally withdrawn in favor of SRFI 158, which is a superset of it. Although the Red Edition still includes SRFI 121, the Tangerine Edition has replaced it for R7RS-large purposes with SRFI 158.
That's fine with me.
Shiro and Thomas, do you agree? You're both co-authors of both SRFIs, but I want to make sure.