Until Bg3 I can’t think of many modules that ran multi dimensional encounters. Until game of thrones I never really had dragons burn and move
Take the blighted village encounter- it’s simple but it obviously would need a little more work as monsters like the ogres don’t react to combat outside the door etc
Does roll20 or any online tool allow you to create this encounter with goblins elevated etc? That suprise round with the goblins there could be very challenging at low levels. What’s the closest wotc has come to something like just that in last few years. D&d has mostly been 2d .phandelver has an early cave where goblins were on elevation but it’s still mostly 2d on how to resolve
