My tuppence worth -
1. The performance of the SIM should not only be aligned to the Aircraft Type specific teaching objectives but also to the requirements of the missions for which training is delivered. The cockpit layout, instruments and switches should be accurate (but the obsession with "Real" components is inappropriate).
2. For VMC operations (close the surface or obstacles) the visual field of view should provide the same visual references that we have from our crew seat. At least 50 degrees below the horizon and 210 degrees horizontally. Texture of the surfaces in the VDB is vital to provide visual references for accurate hovering and positioning for dynamic manoeuvres such as hospital or helideck take-offs.
3. Digital systems and associated aircraft behaviour should replicate exactly what happens in the aircraft.
4. Power performance modelling should be accurate to provide relevant frames of reference for the crew.
5. ALL flight manual NORMAL, ABNORMAL and EMERGENCY procedures should be available in the IOS and accurately represented.
6. Flight loop modelling should be as accurate as possible.
7. Motion should provide sufficient cues to prevent airsickness and provide realism. IMHO not as important as we might think.
8. Noise and vibration should be realistic and are easily achieved
DB