I consider " Christian Dior" to be a recent song so he will probably continue to do that type of music but I don't think he wants to turn into Andy Williams. I suspect few of you will know who that is but my grandmother listened to his records. I thought the "retro electronic" sound of "Dog" was a great area for him to explore and something that's pretty new to him. Something that I was under the impression he didn't really like.
I think that one issue is that most of the music he does seem to like is older and was recorded in a way that is a lot more difficult now. Those records were recorded on tape and those studios are mostly gone. So there is an issue with the sounds of his records sometimes being described as artificial but that works on a record like Dog.
In a perfect world he would have access to the old analog recording technology and the money to spend to make records that way. But he isn't selling as many records as Dave Grohl.
Grohl bought classic recording equipment that was used on hundreds of million selling records and it's in his house where he has all the time he needs to record with it.
Besides the cost, don't you kind of get the feeling that Morrissey probably sings through a few times and moves on to the next one?
So the more punk influenced stuff and the electronic stuff are probably better bets. He did use real orchestral parts on Ringleader but I feel like that was expected to sell more than it did coming after the success of Quarry. I would imagine that record was his most expensive, maybe ever?
And all of this is just my impression without much research so I could be wrong but recording like The Smiths did with many takes and many overdubs done in analog is probably impossible now because of the cost.