Odd, I have spend almost 20 hours on the non existent 'campaign' mode at launch before going online. Longer than it took to complete FH1.
I still play GTS daily and have recently crossed 1000 hours time driven. Sure the penalty system is far from perfect, neither is the SR system. Yet when you drive respecting others you'll find a great community. Avoid the bad apples and your safety rating will keep matching you with the good ones. Sport mode is so addictive I haven't payed attention to the 'campaign' additions anymore.
There are still between 30k and 40k daily active players which is of course nothing compared to Fortnite, yet try to find a good online race within a few minutes in any other racing game.
The one thing I hope PD changes back is daily race rotation instead of now weekly. A week for the same 3 tracks is rather long.
Azzanation, you must have seen me in the game if you've played. I've played sport mode every day, usually between 7pm and 9:30 pm, then more after 11pm. I'm always in the top end rooms though with max SR and DR of B or higher. I'll be on Big Willow and Interlagos tonight.