I hadn't really thought of the protagonist names beginning with X and Y. I don't think it'll be the case, but some of the speculations sure are cool!
I'm just glad B2W2's names were nicer than Hilbert and Hilda, and hope that we can expect similarly nice names (as Nate and Rosa) for X and Y. I still miss the days, however, where the protagonists were named after the games, such as Red, Blue, Gold, Silver and Crystal. I know that the series has evolved by the hundredfold since then and that strictly speaking, this now only applies to Red and Blue. However I think it would be nice to be able to refer to them all by their version names, as done in the Pokémon Special manga (not canon, I'm aware, and I digress).
I'd happily see these characters named X and Y, but otherwise I wouldn't mind seeing any of the aforementioned suggestions :)