Polo Bikes

I asked Giorgio from Mister X about some changes to the original geometry or their frames.

It was suggested that the rear end is too slack and when I suggested shorter chanistays

Considering they have developed the frame and rider tested it, seems to me that changing the geo would be a bad idea.
The geometry is as it is because it feels good, not because they just thought some numbers up and made a frame.
You can't 'improve' on their design having never ridden it.. and anyone suggesting improvements is just speculating...