Do you want to use an operating system on your VPS that we do not (yet) support? In that case you can submit your suggestion via your control panel. We will then examine the possibility of offering this operating system in the future and give a prioritory based on the number of requests.
To guarantee that your services and those of all of our other customers on our servers will continue to function at a high speed and remain accessible, we will never add any operating system without testing it extensively first. This should prevent any instability-related problems from occurring. Furthermore, not every OS is compatible with our form of booting.