Haven't seen this come up yet... 5e should definitely consider incorporating retraining rules. As the composition of my group has changed from vets to a mix of vets and newbies, one issue that crops up is the newbies are reluctant to choose class features, feats, etc due to fear of picking "the wrong one." I hope the retraining rules from 4e carry over into 5e, regardless of the flavor or style the edition takes on. If not, I'm gonna house rule 'em in anyway. Thoughts?