I really want a YF-19 v3 as well. But I don't mind waiting a couple years, the VF-19 and it's variants should tide me over until then.
What I hope they do is release a YF-21 v3 around the same time as the YF-19 with a more lineart accurate battroid mode while keeping the fighter mode proportions of the current toy. If anyone can do it, it's Yamato!