Suggested

Quick races

Hi im only new so go easy on me if im way off. But I just wanted to add. That iv been doing lots of quick races but there seems to be little to no rewards. Mainly because when I started I thought that was the main part of the game, until I realised that the league race is more important.
So my suggestion is to add rewards. Such as new engines or parts after racing a quick race. Maybe even if you win 10 races in a day you could get a high talent driver/staff?? Higher boost packages for attending 5 races in a day?
As I haven't played that long others may have better understanding of what is better for rewards as im not 100% on what is of most value in the game atm. Thanks

Quick races are used for a number of reasons other than just having a quick one off race.  

Some use them to gain experience for their drivers, others use them to check what push levels work best in certain temperatures (this is the best reason imo).  

However, they are a side event to league racing so doubt they will ever give more rewards. Remember you already receive cash for winning or finishing.

Slightly off topic but read the Managers Guide and Guide to Chassis development in the help section they will help you master the fundamentals of the game.