Two Suggestions/Thoughts of mine

[Jalau]

I agree with you. If you don't get it explained and you are leveling your class you go like: "Wait I can combine  pike and inf? How awesome must that be?!". You don't know about heroes yet and you start upgrading your character to a hybrid. New players should get that explained right at the beginning or maybe if you want to upgrade to a hybrid setup it will pop up and say: "Are you sure? Because that will deny you from choosing your hero class, read about it here."

I also agree with the second one, it has already been suggested in another thread. The thread should still be listed on the first feature requests site.