User blog comment:Kogath/Monster Hunter XX Discussion/@comment-27120688-20170202021935/@comment-1780011-20170202225232

Also its gonna be really weird if a game with G Rank ONLY has gold Rath and Silver Los, that seems to be an indication that they dont see deviants as replacements for subspecies.

Which makes sense, Deviants are about taking what a monster already has and cranking it up to 11 with occasional new effects thrown in but not taking away from the core of that monster (Mizutsune deviant still primarily uses water and only uses fire in rage mode for example) where as the majority of subspecies since the 3rd gen have completely flipped a monsters concept on its head and revamped its environment, statuses and element. There's so much potential for subspecies with the monsters that were new to generations I think it would be a big shame to not have them.