True. The BTAS version of Bruce was one of my favourites, somehow, because they struck that perfect balance of having Batman be just dark enough, but not overbearingly so. And Bruce Wayne was utilised well, and in a different fashion than the 'he's just a mask' idea that some established.
But the books have got increasingly dark, I felt, as we crept toward RIP, so to me, this is Morrison trying to lighten things up a little, and given it's only temporary, why not let him play?