From reading most of the posts it seems we in aviation have many problems.
We need more training in basic flying skills.These like all skills degrade if not used frequently.
The autopilots/computer flight controls on modern aircraft are very complicated.With many obscure modes.We need a lot more training on the use of these systems possibly a part task trainer.This would not involve the use of expensive simulator time.
Training in the correct use of Radar is very important.It is not common in airlines to have a course in the use of radar.Yet in airliners its the only way to avoid CBs in IMC.