Wow, referencing the image you've included, if the alignment of the lens hood matches that of the front of your lens (the dot on the lens hood lines up with the dot on the lens) then the components of your lens appear to be off by a very large margin. I must admit that it would bother me regardless of any impact it might have on the resulting images. I suppose it's possible that Leica has some sort of alignment tolerance that they find acceptable for lens assembly, but your situation looks quite extreme. If you move your aperture ring from one extreme to the other (f2 or f16) does the number align with the front dot?
My Summicron is a later version but overall things look the same from a functional standpoint. I only use the dot on the front of the lens as a reference for my aperture setting. For focusing I'm either referencing the back of the lens using the depth of field scale as it relates to the focusing ring itself or I'm visually referencing the rangefinder patch in the viewfinder. In this photo of my camera the dot you see at the front of the lens is actually the dot on the lens hood which covers the dot on the front of the lens itself. The lens hood has a tiny bit of play in it once mounted to the lens, but the lens itself is solid and the aperture reference dot does not move at all in relationship to the lens mount.