Far too sensible an idea to ever be adopted in Scotland. For me the best set up would be 2 leagues of 16 with 2 up 2 down & a playoff between 3rd top/3rd bottom. Below 'league 2' regionalise the leagues (as they do below the National League in England). It makes no sense to me that Cove travel to Annan or Elgin City travel to Stranraer (and vice verca). There are enough teams in the central belt who can move between leagues if necessary. It's working in England and elsewhere in Europe regional leagues operate below the top divisions.
Teams in the top league will complain about losing fixtures but what they really want is the ugly sisters at home twice a season for the extra gate and TV money.