I think that should be a hard subcategory because it is pretty different than easiest difficulty, is possible to fail a run being killed, against easy that is just do the skips without care about the enemies.
You're right.... There should be a category for hard players too. I'm the mod of Project I.G.I 2, I made all three difficulties section in full Speedruns there after getting requested by a player. @Snow_lame
I also wanted to create them here but both the mods are offline on the site from a long time and right now there is no chance that it will be available soon.
@haseeb_heaven true!! But moderators should be active atleast every week once as nobody knows when a new run get submitted.
@kokrovan difficulty categories for full speedrun are live now. You can try and submit them if you have.