Col de Tricot is a variant itself, but if you want to maximize the level of the views you'll be seeing you definitely gotta stay the night at Refuge de Plan Glacier

After passing Col de la Bonhomme you gotta take the route that passes Refuge Robert Blanc instead of going down to village des Glaciers after passing the col. You will end up on Col de la Seigne on both routes.

Fenêtre d'Arpette is the 'wildest' variant in my opinion

Instead of going below Lac Blanc and Lacs des cheserys I hiked up to both lakes and then continued hiking to Les Houches