What about Hough? No controversy there (that I'm aware of,) yet it doesn't seem anyone needs to be worrying about him (except maybe the Catholic Church...)
Well I suppose you have a good point there (regarding the piano). I've never thought of Hough as controversial, just a darned great pianist who can play nearly anything superbly. In this sense Hough reminds me favourably of Andsnes, though the latter is not as adventurous in his programming.
As for the 'Catholic' issue, that's bound to be controversial, if only because identifying one's self with a particular religion isn't terribly trendy amongst famous concert pianists! If he were famous as a church musician, that would be a different matter. And yet... I wouldn't dismiss Hough's Catholicism offhand. He wrote a very penetrating essay on the Catholicism behind, and in Elgar's Gerontius
, itself a very controversial work (though less so now).