In reply to alasdair19: I've done the Devies-Gervasutti on the NW face of the Aielfroide, the supposed 'Walker Spur of the Ecrins'. One of my best mountain experiences, mainly rock but we wore crampons in the icier upper chimneys, nothing harder than UIAA VI but long (1200m) and fairly involved routefinding (I think I remember drunkenly telling you about it on the international meet...). We bivied (planned) about 4-5 pitches from the top, experienced a little rockfall but nothing too bad.
As someone mentioned above the S pillar of the Barre is loose but I quite enjoyed it. The S face of the Barre Noir next door is also ok if you can find the right way...
I know the Gervasutti on the N.face of the Olan has fallen down (2003) and we were told its now a suicide mission. The Desmaison looks good and isn't affected but has aid.
If you've not done it then the traverse of the Meije is great and pretty straightforward, the Pierre Allain on the S. Face also looks amazing but we were stopped by bad weather.
In terms of N.faces, the Georges-Russemberger on the Sans Nom looks really good but serious, mixed in the top half.