The utility has already said that they will not put in different transformers. Mostly because if they have to replace, the low impedance transformers are what they will have availible "on the shelf".
As for extra service entrance length - this is only feasible if we install a pad mount transformer outside instead of replacing the inside transformers which is not that bad of an option - BUT what would be the cost of 200 feet of a 2500 amp (or so) secondary. And we would still have a 50 year old switchgear.
