I love the idea... Although...
He is at its best when he has full control over a brand, from design to image, he has proven that at Bottega Veneta. He gets a lot of heated reactions here at tFS but like it or not, he made BV the hottest brand while he was at the helm. Everything made sense from his collections to how he showed them. It looks like he has way less control at Burberry, and you can tell as the whole thing looks like he's suffocating -- and I suspect he is not getting along so well with the top execs (which allegedly contributed to his demise at Bottega...).
Now I don't know how willing would LVMH be to take on this kind of profile, as they are known to be hands on with their brands.
There is also the issue of all these "Burberry doesn't sell" articles that don't play in his favour... I'm always baffled when the responsibility is put entirely on the shoulders of creative directors, when there are multiple key positions within a house that have the responsibility to ensure that products are selling and these people are never questioned... but I digress... I doubt one would want to poach a designer who's been giving a very mid performance creatively along with poor sales to save a fashion house that's currently suffering.
I would have believed in him for Givenchy... But only if he hired back his footwear and LG designers from Bottega. LVMH would want to kick off a new Givenchy era with a it bag or a it shoe, and I'm sure they'd have been capable to produce that. I think he would have really benefited from the craftsmanship and savoir-faire of the house. You see the difference between what BV provided to him vs at Burberry now.
In the end, it's a pity he took on Burberry. Everyone knew that MW would end up getting fired he should have waited some extra time because he would have been great for the job imo...