Not for each model maybe (there are a lot), but for type - like US ground units pack, CIS ground units pack etc. how it was originally, before combined into modpack. I understand such way is easier for the author, but other people may wish to release their own mods, that will be not overwritten by each modpack update.
if you, or Rapota himself, will work with scenes, please check LODs - flying in Poland with this pack installed and FPS is really drop from time to time (even outside of airfields), I suspect LODs distances increased too much or disabled completely (just a guess, have no time to investigate)
I agree, it would be better to be separated out. I want to concentrate on my Blackhawk cockpit, and helping fix any bugs in 1.16.1 that I can. So I might not be able to help fix this pack. If Rapota isn't available though, I could probably quickly separate them into the different packs as before.