Not every driver in a development program is going to be an instantaneous success, but Hamlin was an instant success for them and the rest is history. Toyota wants another like him, but it just doesn't work like that. You are right though, Toyota has had more misses than hits. This is just looking at it from a Cup prospective because outside of Hamlin, who really is sole Toyota development driver who really made it in Cup. Kyle Busch was Chevy driver, Edwards was a Ford driver, Kenseth was Ford originally.
They are betting on Bell to be that next big thing now, I guess.