The best replacement for third person is first person.

The best alternatives to third person are rated as following:
★★★★★  first person
★★  second person
★  omniscient
★  first person writing
★  first person shooter
★  first person narrative
★  passive voice
★  first person novel
  first
  second
  third person
  limited omniscient
  writing first person
  omniscient point of view

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Speaking about third person, one probably shouldn't forget about use of i.

Other search terms related to third person and their ratings are:
★★★★★ use of i
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Google Trends

Scale is based on the average worldwide traffic of third person in all years. Click on graph for more.
third person
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