In reply to im off:
I started a thread about this recently but it didn’t really take off.
I’ve tended to go in March/April for the simple reason that if there is no climbing to be done at least you can go skiing. Plus you can go for the ski in / ski out approach.
A friend of mine did the Dent Blanche NF about a week ago and reported decent conditions there. Sometimes you just have to go and have a look as it’s hard to get conditions info at this time of year, particularly outside Cham.