I understand your guys association with tureno and the old names, but those that know that name are the same ones who are likely to buy the car regardless of name. Toyota needs a new name to attract a new crowd of buyers.
I myself was originally hoping it would be the next celica, but honestly opinions stated before are probably right. People would automatically assume it's a slow Eco box and sales wouldn't be as high. And we need sales to be high if we want Toyota to make sports cars in the future.
I think FR-S(MR-S naming convention) or FT-86 would be the best names. Maybe even GT-86.
What would be awesome is if they released this car as the celica then released the ft-hs as the Supra.