I have just purchased PC3 on Xbox Series S (only the standard edition - I couldn't justify another £25 for the DLC). So far the graphics are smooth and seem to be a similar level to Grid Legends (and therefore good enough for me).
For now, I'm probably going to focus on the Rivals events (until the game goes offline in February) and leave the career until later
I am assuming the career mode will still work after February (based on the GTP article which says the game can still be played offline).
And, to me, the game handles beautifully on Xbox pad, right from the intial training race. On default settings - no tinkering required. It's good enough for me to be getting approx 2/3 "perfect corners" on each track so far, even on the Cote D'Azur time trial.
There is enough in the career mode and [6 months of] rivals mode for me to be already happy that I will get sufficient "value for money". Although it now means another game to fit into the week (along with TDUSC, TC2, TCM, GT7 etc...)