Hi. I have been playing iGP for over a year now and have completed hundreds of races in a few different accounts. One thing that annoys me is that when I train my drivers, I have to choose one of the 6 options (Speed, Mental, etc.). Also, with a new driver who has random attributes (e.g. Fast corner 7, slow corner 6 and Wet weather 2), the attributes soon even out to be equal after a few races (e.g. Fast corner 7, slow corner 7, wet weather 7). The current training system doesn't yield much freedom at all.
It is under these considerations that I propose a new way of training. Rather than selecting one of the 6 options, the managers are free to choose any 3 of the attributes to train (e.g. Fast corner, Focus and +2% Health). This yields much more freedom in training, and allows the managers to fully explore what each attribute has to offer.