I know they're quite different.
The good things is we're talking about Hobby Boss here. Take their CV90 family, for example. The way they set up the sprues in their kit of the CV90-40C with add-on armour, they'll only be able to use the tracks, suspension and some assorted bits'n'pieces for their upcoming CV90-40 kit. The hull and turret parts will have to be completely new. And if you look at Legend's conversion for the Merkava ARV, that's also a fairly involved affair. I reckon the Hobby Boss version will also come with a lot of new parts. Lots of new parts plus an extra new hull for the Namer don't seem that unlikely.
So, going from Hobby Boss' inclination to consider "out there"subjects and and their willingness to make "family" kits even when they don't have very much in common, I think they might consider a Namer. Well, at least I hope they might.
Another thing that I find interesting is that they even consider an ARV. The ARV variant was the only CV90 variant they apparently did NOT consider (at least according to their pattern maker's comment on Armorama). Hmmm, a Leo 2-based Büffel ARV? Come on, Hobby Boss, you know you want to....