Eltab
Lord of the Hidden Layer
It would step all over Ed Greenwood's personal toes, but ...
Set an AP in the Cormyr - Dales - Myth Drannor area. Include a gazetteer (see Chult's) that makes you want to play tourist in the area and really explore it. Provide a plot that has a generous time limit (maybe crowning a king?) and encourages exploration. Solving the final problem requires interacting with the lore provided. This could become a 5e "classic FR" adventure that satisfies the "gotta have my FR" bug and clears a path to release other settings without the 800-lb gorilla interrupting the staff.
Set an AP in the Cormyr - Dales - Myth Drannor area. Include a gazetteer (see Chult's) that makes you want to play tourist in the area and really explore it. Provide a plot that has a generous time limit (maybe crowning a king?) and encourages exploration. Solving the final problem requires interacting with the lore provided. This could become a 5e "classic FR" adventure that satisfies the "gotta have my FR" bug and clears a path to release other settings without the 800-lb gorilla interrupting the staff.