Could the Catholic Church have been less in need of reform by 1500?
Could it have been influentual without being so linked to abuse as in otl
Could it have been influentual without being so linked to abuse as in otl
On tolerance? There's not a whole lot you can do here, but having the Church take a stand against persecution of the Jews for ridiculous lies would be a possible if difficult thing to have happen.
In general, the best insulation against oppression is to be stronger than your oppressors. So specify who the Church needs to be more tolerant to and find historical means to buff 'em.