Hopefully you should be abe to change pumps, it may mean a delay while they source it etc, but if you can't see the screen on the Veo then it pretty useless to you...
A lot is down to testing and liecening costs involved, every part of the pump has to be rigously tested for reliablity etc before it gets liecene if any changes or modifications are made to a pump, it got to go through the process of being test and effectively reliecened.. So sticking to the same parts from one pump to another helps to keep the testing costs down..
Mobile phones don't face this problem, they can change at will keeping up with the times..