I can understand why they want back to the drawing board, given 'A compelling opposite to the tiefling' has been a thing they've been working on for 26 years. Aasimar were a slot filler at best who never really did anything with it, Deva ended up being anti-Rakshasa, and the newer version of Aasimar didn't really give them a unique visual identity. "Animal headed angels" -is- an identity, and its not like Aasimar ever leaned into the "I guess a Guardinal could be your parent" side of things. Drawing from that side and the obvious Egyptian side of things also is a visual design.Well, I don't care for the new "furries" celestial race. Why couldn't they just do to the Asimar what they did to the Tiefling? Is the furry market really that influential? But, I've never been a fan of the race of the month club that seems to have become more prevalent in recent years.
Plus there's a very good theory that Ardlings aren't supposed to be the new Aasimar. They're supposed to be the Generic Anthro Race, holding all of your bear people, your wolf people, and so on. The problem of course is I reckon folks are going to want stuff more specific to those animals to fill that niche properly. You don't want angel wings, you want bear-like toughness, or the enhanced senses of a wolf, or just, a ridonculous bite