Hi,
I really enjoy doing presentations in Affinity Publisher as I don't care about animations and it has much better control over layers and fonts compared to Powerpoint. Overall the result just looks more professional. Yet, most templates out there are .pptx so being able to import them would be a great help. This would also allow easier collaboration with people who are not familiar with Publisher.
I know I can export to PDF in Powerpoint and then import it to Publisher but the results are just awful. Powerpoint export is not as good as Publisher to begin with and when you import it all text become shapes which makes it impossible to edit.
.pptx export would be a plus for collaboration but it's not really critical.
I got a few people into Publisher to do presentations and we are really enjoying it so far, I don't think it's a fringe use case. Give us some love please 😁
Thanks