I think they ran out of ideas, maybe cause we already had very strong p dps (chrono) and c dps (mirage) and on top of that, those gave boon support so idk.
The pros with virtuoso though is that it kinda fixed chrono's slow damage ramp up weakness which makes it mes more viable in fractals, and as for condi virtuoso its also way more easier to play compared to the more complex condi mirage.
I think its a good spec at the end of the day, its just that chrono's and mirage's designs are so crazy that we are spoiled and expected it to be on par with chrono and mirage.