Motion platforms add a lot of immersion to VR. You don't need full motion, just enough to feel a change in orientation. It's great for driving sims since you don't roll inverted as often but it works well for flight sims that support it, even without neg G. For sims that don't support it the motion platform can follow the joystick movement, and it's fun for flying around, but doesn't work as well for fighting as the motion following the aircraft attitude. In helicopter sims it's helped me a lot because you can feel if you're balanced in a hover.
Motion is relatively expensive for a game accessory but it has a couple of advantages besides the fun factor.
Sitting still for long periods of time is unhealthy. Reacting to the motion seat lets you be more active while sitting.
Motion sickness often stems from the difference between what you see and what you feel. Motion seats can help. If you like VR but always suffer from motion sickness, adding motion to your seat might help.
https://uxplanet.org/motion-sickness-in-vr-3fa8a78216e2I use this one. You don't need the whole setup just the base and a seat that you can bolt on.
https://www.ricmotech.com/Next_Level_Racing_Motion_Platform_p/nlr-gtump3.htmI don't know how much work the software interface would be for Hitech but it would expose AHIII to some fanatical gamers and it might be fun and useful for Hitech.