I was referring to an original Western Vocaloid versus a bilingual already existing/Eastern Vocaloid (i.e those two). I mean, Macne more or less kept her same design anyways, same with the original Miku English minus the different art style.
Even then, I don't think Miku English is very cutesy to be honest. I think she's a nice-sounding vocal and different from several Engloids, but she's not cutesy at all (especially V3). Macne Nana IS a cutesy English vocal, but I haven't seen a lot of her V4 English usage sadly, and was pre-existing as a Japanese voicebank prior as a UTAU(IDK if the Macloids are UTAUs are something else).
I also think that Miku formula isn't inherently bad, as they're just a collection of tropes/traits often used in media even if you don't notice. A lot of those tropes used in said formula were in Anime around the same time, if not earlier than 2007. While if a 'Miku-Formula esque' was made, I don't want it to be straight copy Miku because it would probs flop, but, that formula could be utilized to honestly develop a solid Vocaloid design. Of course, as I mentioned earlier, that formula may be slightly different for Western fans. this is before discussing if that Vocaloid would appeal to a professional market or EDM or whatever market outside of fandom because this is the West ya know...wow this got long I am so sorry I didn't think this topic would blow up ehehe