So I am thinking about this again.
I think I want to undertake a project to run a PF AP in 5E, BUT I want to do all the work ahead of time -- both mechanical conversion and process of collating, indexing, and where necessary revising the AP so that it is a more seamless whole with early views of villains, deeper connections throughout, and so on.
What AP do you think would be the best for this? What AP would work best converted to 5E with 5E's particular assumptions, and itself is a fun AP that could use some polishing?