100% to me even the last recognizable Angel group to me was Candice, Behati, Rosie, Miranda, and Doutzen. Those were girls that VS made into stars. And I wish Rosie and Miranda had stayed a bit longer to really cement that. I feel like Emanuela de Paula also would have been a fantastic addition with those girls, and that would have been the clear successors to usher in the new decade as the top angels as Adriana/Ale/Heidi/Tyra/Gisele had done before.
I feel like the VS executives were dumbstruck that Rosie and Miranda left as soon as they did and that pushed them to hold onto Ale and Adriana a bit longer for that superstar status. But no idea why they never developed Doutzen as much as Candice. I'm guessing because Doutzen never had as restricted a contract and wanted to do more things besides VS, but to me these girls were the last recognizable and meaningful angel faces.
The angel brand started being watered down when they added Izabel and Selita who became angels right away without any VS work, and Marisa (who was great at catalog but had no place in the show). Then they went and hired Erin H, Chanel, Lindsay Ellingson, and Karlie who were all fantastic in HF, but again not really the VS type. They just didn't really live up to the title, and by the time Romee/Stella/Martha/Elsa were being added I could barely tell any of them apart. Even if I liked Taylor and Sara, I just wasn't that invested in them as angels because there was no point to being an angel. No 3 outfits, wings, segment openings.