There is no new option to turn off the increased driver transfers or turn off icons. I don't know if it's the same with single player, but after season two our career signed 4 icon drivers. Which rui...
Ideas
Yeah it seems the option is missing at the start, after you choose whether or not to add 11th team to the grid the next option screen should be icon drivers (that is how it is in solo career) but it jumps to add friend option screen.