If you think A3s are too dark, you probably are not as sensitive to high frequencies. They aren’t actually a dark speaker, as you can see from the anechoic ANSI/CEA 2034 measurements of the Magico A3, the listening window includes measurements from 15 and 30 degree of axis, and the treble only slightly decreases.
The sound power is slightly dark with the A3 yes but if you are listening way off axis you probably want a wide dispersion design with a waveguide like the Revel F228BE.
If you find the listening window response too dark then you could probably look at the Paradigm Persona 3F, they are quite the opposite and have a rising treble response and will probably have the highs you are looking for.
https://i.imgur.com/hiGeBXK.jpg
https://i.imgur.com/slYBQbo.jpg
https://imgur.com/R3prT8T
If you find the listening window response too dark then you could probably look at the Paradigm Persona 3F, they are quite the opposite and have a rising treble response and will probably have the highs you are looking for.
https://i.imgur.com/hiGeBXK.jpg
https://i.imgur.com/slYBQbo.jpg
https://imgur.com/R3prT8T