Not gonna act like I'm following any of this beyond the bare min (Did read one of Melichoir's post about resources and think it's a bit short sighted to think they simply want to make more CC options. IMO it's bigger, it's them working on a PSO2:NG level next step for the game that would include CC but that's off topic) but I will say that Viera desire seems to be more of a fantasy driven thing.
Looking at how common it was last year to find people whining about Viera being Viera made it clear to me that some number just wanted Bunny Neko girls. (As in the "Why aren't the white ones shorter!?!?" where people convinced themselves that the cute art style in some BS comparison made by a fan meant that there was a shorter, cuter, whiter version that they could use when the race is legit tall af and commonly brown. Again, when you think of Viera you think of Fran).
It's pretty much the reason for the "male Viera body type war" that was big enough that YP legit had so say "No, we will never make child-like Player characters".
It's some kinda combo of projection and willful ignorance imo. People have been pointing out for years YP's line about not doing Male Viera and people kinda convinced themselves that they promised to never do 1 gender races again regardless... like this vvv
To put this in context the game had ...
Lala -Male/ Female
Middie-Male/ Female
Elezen- Male/ Female
Highlander-Male
Reo-Male
Cats-Female
That's a problem, 50% of races are monogendered. You would want to make them whole before adding any other race.
This doesn't mean that they're completely against monogender races as you can see from his comments about Viera in 2013 nor was it something that would later stop them from making Viera and Hrothgar as we see them today..more limited than any 1.0 race/ clan.
All this means is that before we ever get a new race (which we know isn't happening, they said these are the last) they would first do the counter-parts to what we have (something they have never confirmed to be doing. MAYBE they will show us NPCs at some point but even that's iffy as they know how much that would trigger a massive wave of people not realizing why an NPC is easier to make than a PC)