Why would the band themselves want to go back to an earlier sound bobby?
I don't think they do. People accuse KOL of selling out, but I see it as a natural progression from raw ---> polished that happens with a lot of bands.
Because "youth" and "a-ha" were really raw and then a little less raw, respectively (but still raw), people operated under the assumption that this is who KOL was. I don't see it that way. They were still green. They were still figuring out what they wanted to be. And so the KOL you hear in the recent albums is who KOL is. Some people hate who KOL is. I still like them quite a bit.