At least one long medium mountain stage, similar to the Le Creusot stage in 2021, should really be a priority. These kind of stages rarely boring, usually good and sometimes very good. And it is possible to create a stage like this several places in France, especially in Massif Central., but also in the Vosges, Jura and the outskirts of the Alps.
This is a stage I designed in the Race Design Thread with a finish in Clermont Ferrand after a loop around the town two times, including the short and very steep Col de Bancillon. The stage could easily be made harder by approaching from the south and not from the north like my design. There are several places where one easily could have created similar stages with a finish in at least bigger villages or medium sized towns.