The funniest thing I've seen on HN in quite a while. You could even monetise it by marketing to those people who are fans of pre-decimal currency for bizarre political reasons.
To be fair, a base-60 system has some value over a base-100 system.
That being said, a pound is so worthless today that the difference between 1/60th of a pound and 1/100th is meaningless; it would just be a rounding error in most calculations.
I suspect that all fractions of a £ will go the way of the shilling in the next 30 years.
Still higher than the dollar? We lost a chunk against the Euro but not as much as I was expecting. The only thing the £ has really devalued against is housing.