Change Varnish Cache Expire time
I would like to be able to configure the Varnish Expire Cache setting to something longer than 4 hours. I think 4 hours is too short. I would set it to a week or even a month, and just have it clear the cache when a page is updated.
This is absolutely needed. It is easy enough to clear the cache when content is updated so there shouldn't be any issues in allowing customers to modify the varnish cache expire time at server level.