Because of the feedback, I´ll write what I think about what I imagine after completing the motor pass content. Since there are the boosted parts, I can imagine that after you have collected all the Motorpass content, you will receive a random boosted part for every daily you complete. So you would have an incentive to play through the daily every day and also those who bought stars for quickly completing the motor pass would also have an incentive to play the daily missions.
Regarding the Live reward sniffer set, which after you complete the hobbies and have everything at maximum Gold would make sense if you happened to be able to win a special boosted item in the in the Live Reward Boxes the are scattered around the country. Then the talent Collector max. 8% or Sensor max. 10% would even make sense as a boosted part and encourage the players to travel the country in free driving to find the crates.
What would also be useful is a special mark on the boosted parts, so that you don´t accidentally destroy accidentally them.
Now that the boosted parts are in the game, I think it´s a shame that they aren´t being used more to encourage players to play.