Multi-rom menu was already achieved on the Old3DS a while back.So guys you wait for GW because you want multi rom menu ? What's the real reason ?
The bigger reasons why we're waiting for GW to have support for the New3DS is because of all the features it has that Sky3DS doesn't have: Region-free, installing .cia files (DLC, themes, updates, etc.), homebrew support (kinda), EmuNAND, play modified roms (undubs, mods, etc.), backup NAND, backup retail games, backup retail saves, etc.