It's just that they're really weird all together. Like, why is Darmani there? He didn't have that much to do with the game. Also, why isn't Goron Link there? The other transformations are there, it's kinda odd him missing.
Right now, it's just looking like a couple main characters standing. I don't really see this going anywhere with this setup right now.
If your using that logic, why is Deku Link and Skull kid there? Deku Link's true body was never shown, and Skull Kid was the main antagonist of the game. All I'm saying that it feels like a really odd group to have as the cover.
Well because there is no art for Deku Butler's Son(Hinted that he's the soul of deku link) and Skull Kid was never truly evil, majora was, so you can say he's "trapped" in there with him, Again, working on it.