Hip discipline is important in the focus of his development if he wants to improve. He uses his hips to focus pressure to the inside foot while struggling to maintain good tracking of the outside ski. His hips should tip to support the outside ski instead of driving downward all through the turn. This looks to be the major component of his turn inefficiencies . It causes the excessive tip lead resulting a bit of foot tangle at the top of his turn and most of the turn to dissipate his outside hip lead. If I worked with this guy I would be helping him understand the role of the hips through the turn to enhance edging through pressure, lateral balance drills that help him find his outside ski balance and working on getting his LTE active all through the turn
To use Josh's example of himself. Look at his inside hand leading some developing bit of tip lead as he slides his hip into the turn instead of rotating it coupled with the shoulders . Josh's outside foot is anchored nicely by a bit of well placed hip counter and nobody has parallel shins always but Josh could have tipped the LTE to get there which demonstrates also how we need to focus to get good LTE tipping
Yeah , we'll be doing Pivot Slips too and some others to break up some of that unified movement too.