User blog comment:Kogath/Monster Hunter X Discussion/@comment-26261665-20151025194600/@comment-27120688-20151026144856

Not complaining but the lack of a G Rank usually also spells less monsters as well. The only thing here that's weird is that we have yet to see any type of subspecies. This is by far the biggest MH game if subs are included, as the monster count is about to surpass 3U with just unique monsters. If this game doesn't have subs then I understand the lack of a G rank, but that would just be taking away gameplay variety experienced in the past game which I don't see happening.

Tl;dr: if subs are in the game, then I'd be surprised if there is not a G-Rank or substitute. The number of subs for the number of monsters in this game is already insane, plus all of the 4th Gen subs were G-Rank only unless they lower them to High Rank. Hopefully we get confirmation on this matter this week with Famitsu