Perhaps part of the PPL course should emphasise the Darwinian nature of post-licence flying - just as with most things in life, if you don't prepare properly you will suffer the consequences. The emphasis should be on what those consequences are - injury or death - because of the very unforgiving nature of the ground/air interface.
Perhaps the CAA could commission some films/case studies/literature highlighting the potential pitfalls of poor continuity of flying coupled with low experience and make seminars to discuss these aspects mandatory for all licence holders.
Again, the mil mandate regular Flight Safety trg and Human Factors training to keep awareness high amongst the aircrew.
There is nothing like analysing other peoples f**kups to make you aware of your own potential to do the same.
ISTR there were voluntary seminars organised by members of this forum a few years ago - do they still happen?