Part of the issue is falling under the EASA banner. We cannot change our training (whether it is amend existing or introduce new) without jumping through the EASA hoops so it is not as straight forwards as you may think. EASA is the over arching authority, and before anyone starts banging the Brexit drum, we will still follow EASA after October.
Another change that is required is to standardise the biennial flight check. Include an airspace crossing and some form of infringement/airspace awareness. Set a syllabus for it, don't leave it to the instructor to do what they feel like doing.