The best replacement for soffit is fascia.

The best alternatives to soffit are rated as following:
★★★★★  fascia
★★★  bulkhead
★★★  eave
★★★  no soffit
★★  siding first
★★  vinyl soffit
★  aluminum soffit
★  eaves
★  soffit
★  roof vent
★  solid soffit
  non-vented soffit
  gable vents
  wood soffit
  gable vent

Your alternative for soffit is not listed? Suggest!
Speaking about soffit, one probably shouldn't forget about drop ceiling.

Other search terms related to soffit and their ratings are:
★★★★★ drop ceiling
★★★ vent
★★★ vents
★ fascia
★ vinyl ventilation
You have in mind a companion for soffit and it is not yet here? Propose!



Google Trends

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soffit
fascia
bulkhead