Restore the devil’s advocate, make canonization a much more rigorous process taking much more time, as someone described. I would likely set an example, beatifying and canonizing few. And most of those I would canonize would be ones beatified centuries ago but for whom, for one reason or another, the cause slowed and they never got around to canonizing them. Except maybe Franco
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Restore the measurment of indulgences in days and years of canonical penance. Call a Jubilee in 2033. Allow a medal to stand in for multiple cincture cords (like the scapular medal).
Stop talks with the Anglicans entirely. Be dismissive of the Protestants in general. Be very firm with the Orthodox, and in a certain sense aloof. Keep the lines of communication open, but be totally uncompromising and keep a “we don’t need you, we’re doing this for your sake” attitude. But still, a lot of the issues with the Orthodox seem to be semantical misunderstandings, problems with the wording but not the underlying ideas…so I think we could still work to try to resolve that. With Muslim pressures growing greater in Orthodox regions…I think they might eventually cave for the sake of offering a unified Christian front in Europe, as long as they aren’t holding out because they think we also might be about to cave. If it’s clear that we arent…I actually think they might come around sooner than you might think.
Be very respectful of the Eastern Catholic Churches. Encourage them to proselytize, make switching into an Eastern Rite easier and let more Latins know about that option. Remove all latinization, including of theology, as long as we makes sure that their parsing of the dogmas is consistent and that we agree on the essential ideas, even if we emphasize different things or our wording is different or the philosophical methods and tools we use are different (ie, we’re not going to require them to adopt Scholastic metaphysics…as long as we are sure that they are expressing the same revealed teaching, just under the assumptions of a different
philosophical system or with different technical language).
Okay, all that sounds very stern and dictatorial. But otherwise be a very charismatic Pope. Assuming the hypothetical election was when I was still young. LOL, ideally right now, in this alternate reality, at 18. But in my 20s or early 30s lets say, I could become the first celibate sex symbol! Give interviews, be off-the-cuff, do cameos in movies, use the internet, have small dinners with random people, both the famous and the poor and marginalized. Do a lot of volunteer work for the poor personally. Be seen dancing to modern music I like (though I would require that only chant be used in the liturgy). Be a bit cooky (but not hanging-babies-over-balconies cooky). Show people a joi d’vivre that will make traditionalism and Catholicism attractive, and not incompatible with fun, fullfillment, interest, or intellect.