I asked myself this same question some time ago and decided to do a nice and easy flying scale jet as a weekend beater...(a Skymaster f-15) instead of a sport jet , but as I wanted to make it look different I opted for a paint scheme not available in ARF models.

The idea is to skip anything unnecessary to keep it flying, (aleirons, flaps, speedbrakes, landing gear covers,light system, opening canopy)
but at the same time, trying to keep the paint job and marking details as accurate as i could do them to make a fair representation of the full scale F-15.