User blog comment:Na299/Ways of Gold Farming/@comment-89.137.141.17-20150602094954/@comment-87.128.228.130-20150602100757

It matters in the sense that it takes longer to reach the end of a driver level, and levelling up multiple times during a continuous streak of challenges is reduced by 50% now.

Anyone knows whether the rewards for leveling up stayed the same?

They could just fix the bug (and maybe they did). So the other changes (increasing the price of the crew, halving the R$ and Fame rewards) don't make much sense to me, other than telling "We want to make it much harder for you guys"...