Definitely TFA or CAP are not going to give you the blueberry flavour you’re looking for I’d go for FLV @anon84779643 gave you a good direction to follow, or use FA or MF, Blueberry muffin FLV is a very good idea, you’d have to add another BB flavour to make the strong base you’re looking for, FA blackcurrant, kept very low could be the one, a tip could be to use some lemon.
Try to post a picture so people can understand what it looks like, butter base, darker, sugar cookie like and so forth.
It’s more of a light airy biscuit rather than a heavy scone… It’s not exactly my fav, but I have had one…
It’s not dry… its not too oist but it has a light moist to it… which is why I went with the cupcake batter the cookie and the g cracker for the edges…