Which could be satisfied with a mechanical device?
The second part of the question is less important since you may not know what the solution to your unmet need is.
This is for an advanced product design class at the University of Colorado. We are engineers working toward advanced degrees in mechanical engineering design. We are trying to determine whether we will be able communicate with enough climbers and guides to gauge their needs. Then we will design a product that they need.
One idea that we currently have a prototype of is a backpacking stove that burns hotter in low oxygen/cold environments than what is currently available. Is cooking at altitude an area that could be improved for you as a high-altitude climber?