I honestly don't see that happening, not to any major extent. With other synths, you can at least get them from a variety of places internationally; even the Vsingers are available through the Vocaloid website. The Medium⁵ girls aren't available outside of Taobao/mainland Chinese retailers, which require you to really know what you're doing just to be able to buy them.
Then again, the same is true of Xingchen, who still managed to gain popularity outside of China... I really do hope Quadimension's other vocals get the same attention, but given that they're for the still-new SynthV rather than the established and well-known Vocaloid, I don't see it happening, at least not any time soon.
Then again, the same is true of Xingchen, who still managed to gain popularity outside of China... I really do hope Quadimension's other vocals get the same attention, but given that they're for the still-new SynthV rather than the established and well-known Vocaloid, I don't see it happening, at least not any time soon.