This part: "However, as those are neither well understood nor well defined, some assumptions are required" might be better as "However, while those are neither well understood nor well defined, these are extrapolated from IETF/IRTF/IAB expressed administrative needs and desires".
This part: "However, as those are neither well understood nor well defined, some assumptions are required" might be better as "However, while those are neither well understood nor well defined, these are extrapolated from IETF/IRTF/IAB expressed administrative needs and desires".