Can I join?
Mewbiraxys: Indeed, but RubyxSapphire hasn't really been 'dealt with', per say. Yes, they admit their feelings in the Mirage Island arc, but after that, the only bit of romantic interaction (up to the current manga chap.) is that Ruby either really doesn't remember what was said, or he's playing stupid.
Does Red/Yellow's relationship remind you of another couple in another Manga/Anime?
I would say Naruto and Hinata from Naruto, but aside from the Chunin exams, there really hasn't been much interaction between the two. In my opinion, they remind me of Domon and Rain from an old anime, G Gundam. Domon really didn't know what to do with Rain, like how Red doesn't know how to treat Yellow now that he knows she's a girl.
Do you think that MATO, hidenori and satoshi yamamoto agree with specialshipping??
I'd assume yes, since they do control what happens to the story.