The issue is not about memorizing numbers, or even length of numbers. The issue is that it is yet one more example of using the UA name/product - but the underlying system becomes CO - (e.g. the Continentialization). If the CO numbers or process were better that would be one thing. But they are not - so MP was the adopted program - MP numbers should be adopted. I would also ask is this really a new system or is it just the OP system. In which case from talking to CO folks that is NOT good news. CO can not upgrade with miles the day of departure - MP can. I'm sure there are other examples - but it appears most of the changes have gone this way (LIVERY, Blankets, Pillows, Coffee, etc. etc)....each individual item is less important than the overall and collective issue.

There is a bigger issue here.