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SkyVu can't really add anything anymore except Skins, I don't even know if they're able to make new Weapons at this point. In terms of anything groundbreaking like new characters, new modes, new Specials and Pro Modes, social features such as Chat and Clans, and any other possible revelations you could hope for, none of those are ever going to appear in the game anymore as far as we know.
Multiple SkyVu members in the BBO Chat responded to BBG requests such as these, and while they were all worded slightly differently, it's always the same general response from what I've gathered:
"It's hard for us to create *insert game-changing feature here* for because we don't know our way around the older technology used to create BBG. We're more familiar with the BB Overclock engine so it's possible to include *insert feature* in this game, but we can't see it working out for BBG."