Success in initial training for regional aircraft with advanced cockpits is mostly a function of attitude and the ability to learn new material in a compressed training environment. Prior experience in 'glass' is beneficial but not necessary.

Want to know what one of the most common problem areas is...and one that has led to failures in IOE?

A visual approach. As another poster said, there's something to be said for Cub time!!

But one thing on that...when coming to a high performance jet, leave the idea that 'pitch controls speed/power controls altitude' behind to the Cub world.