Ok, how can we get the Catholic Church to make Martin Luther a Saint? The only restriction on your pod is that he can't be too different personality wise then OTL, basically, he should still oppose the same things he did in our timeline.
Make other Reformers look very heretical compared to him, as well as making them appear around the same time as he.
This could work. Have some of the Radical Reformers (or someone who thinks like them) show up a littler earlier. Luther could becomes focused on defending the Catholic understanding of the Eucharist. Add in a Vatican more interested (it doesn't have to be that much) reforming the political side of the Church for good measure.
Ok, how can we get the Catholic Church to make Martin Luther a Saint? The only restriction on your pod is that he can't be too different personality wise then OTL, basically, he should still oppose the same things he did in our timeline.