Thanks for all the suggestions and apologies for the delay in responding!
John - yes we spent 4 weeks at Orlu, climbing mostly on the Dent but also Calames and other local crags. The highlight was Les Enfants with Alison Cowley which she wrote up here https://www.ukclimbing.com/articles/destinations/les_enfants_de_la_dalle_ar.... So done a lot of the routes but a long while ago so may well be worth a return visit, especially now there seems to be a lot more in the Ariege Rockfax. Do you know if there's anything similar in the western Pyrenees?
Paul - have also been to Ailefroide a couple of times, but again may well be worth another visit. Particularly enjoyed the very long routes (eg on the Face Sud Draye)
c9smith8 - don't know this crag, will have to investigate. Is it multi-pitch, how many routes and do you know which guide(s) it's in?
tjekel - I've climbed on Gastlosen and in the Furka Pass (though I prefer Grimsel ;9). I've also climbed a bit in Austria, but there usually seemed a lot of hard walking to reach the crags. But I've got the Schweiz Plaisir and Austrian Genuess guides so I'll have a look at the other areas you suggested.
Thanks again to all of you
Alex