Don't get me wrong, I don't think they shouldn't do that, I just can't see them do it because it would be a really bad look for them. Yes, they would have "learned from their mistake" but they'd still be leaving the other two in a worse situation with no fix because they decided to be fancy the first time around. I'm not fully convinced of this myself, but if there's even a speck of truth in the speculation that Viera hasn't seen any additions so far because they also want to give Hrothgar something (and that's a bit more involved than just slapping hair on them) I just can't see them releasing male Viera without at least some of the same limitations because they don't consider their design decisions a mistake in the first place.
Now here's something we completely agree on. It is bad and anti-consumer and I'm still kind of surprised it blew over the way it did, probably because the 'missing' gender counterparts drew most of the ire. Personally I still think Hrothgar got the shorter end of the stick with the whole Fantasia-to-change-hair-thing and only having about 4 to choose from, but neither are in a very good place for the reasons you also mentioned. It'd be great if they learned from it for the future but if you watch the art stream they seem to take a lot of pride in how 'unique' they both turned out limitations be damned, they acknowledge it isn't a great situation but still gave off the air that it was a good trade-off. They seem to almost enjoy making things needlessly difficult for themselves so walking that back for male Viera, while it would 100% be the right thing to do, would be like admitting they bungled the other two and I just can't see them do that without addressing it for both. Though stranger things have happened so I'd be happily surprised if they did.
