I have thought of a neat way of increasing capacity to 70k without much effort for City......
Open up the Minihad & Athletics stadium for overspill fans.
7K in the minihad & around the same in the athletics stadium.
Could make it family friendly, (relocate the family stand?) with a lads stand for teenagers to watch with their mates
Charge a low fee (like the cost for EDS games) and everyone watches on the big screens.
Could even be able to allow alcohol as its not a live event, simply watching on TV like millions do in pubs watching Sky.
People on the waiting list (if there are still any out there) could also be allowed to watch for free as part of their obligation to pay £100 ro be on it
This could also be an option when any ground expansion is undertaken in the Etihad, more flexible than the last expansion, which had to be done without causing too much disruption to the existing capacity.