Man some people like all the bells and whistles
It is not possible to program way points on the MINI Sat Nav nor any other standard Sat Nav that I am aware of ... I would suspect that some after market systems might have such a capability. If you wanted to go to a number of set points you could always program them in and add them to your address book for easy retrieval during the drive ...
There is nothing to stop the current system supporting that type of approach if they wanted to add the feature to the firmware ... personally I would never use it. I want to go from A to B

I hate going to A to B via C and D

ask my gf how many times she has asked me to take 'just a little detour' only to arrive early at B having never seen C or D
And yes got the picture Gazah

thanks for that