In reply to joe.91:
From the French side you're kind of looking at anything on the N. Face of the Grandes Jorasses, anything on the Brouillard or Freney faces of Mt. Blanc, anything on the Grande Pilier d'Angle, anything to the left of the Brenva Spur (e.g. Route Major but these routes are all objectively very dangerous), maybe some things round the back of Mont Maudit, anything on the N. Face of Les Droites or around the NE Spur, maybe things other than the main couloirs on the N. side of the Verte, things on the Nant Blanc face of the Verte, things on the N. Face of Les Drus. As a previous post states there is no formal definition so taking commitment down a notch, depending on what you've done, you could go for things like the Frendo Spur, Petites Jorasses, Gervasutti Pillar or other longer routes round the back of the Tacul, any of the long routes above the Envers that go over the top, the integral up the Peigne and on to the Plan, N. Face or N(E) Spur of Les Courtes, routes on the S. Face of Les Drus. This second list should all go in a comfortable day with either easier access or descent or both. The former set are harder to either get on or off, and will require pretty swift movement or a bivouac on the route or maybe on the top. That little list will take you a while! Good luck.
