I was listening to a podcast last night where they were discussing strange foods like grilled tarantula (tastes like crab?), and they got to talking about how crustaceans are basically "bugs." Then earlier I was looking through the old (non-canon) Lands of Mystery RPG sourcebook to refresh my memory on all the old South Seas zones it listed, and came across Mak'aru, the supposed makrura capital, beneath the Maelstrom, built into Scintal Reef, a miles-long coral reef.
I had never really thought about it before, but the makrura definitely do have similar body types to nerubians and some of the aqir. From what we've seen of them they appear to be quite primitive, but the fact that at some point they were intended to have a capital could perhaps suggest the presence of a more sophisticated makrura society beneath the ocean.
So, do you think they could be servants of N'Zoth, just as the qiraji, nerubians, and mantids served C'Thun, Yog-Sarron, and Y'Shaarj? Would you like to see Mak'aru as an Ahn'Qiraj / Azjol-Nerub / Klaxxi'vess style city or raid?