Easy? I don't care about easy, I care about interesting. A non-male or non-white Doctor is such an obviously viable choice that thought experiments in this direction are boring. (Of course, one can still complain and hope that this makes the people in charge realize that it could be time for such an obvious choice. This might be necessary, but it is tiring and also boring.)
Those other bat people are comparable to having Romana around (or, more or less, River Song, or Jenny, or Doctordonna). Regardless how interesting or cool they might be, they are secondary to the central character. As a very wise imp from the Mite-Dimension once said: "Batman's rich history allows him to be interpreted in a multitude of ways." I want a new and different interpretation of Batman, not just some experiments with the supporting cast.
Why ask for some small steps, when you can ask for radical ones? It's not even impossible: They could just revive Elseworlds and make it a oneshot or a miniseries. They could.