in my opinion they will never change the upgrade/research time.there can't be more ages in a short time,in fact the drone age takes more than 1 year to be available.if we use only 1-2 months to finish all the upgrade in an age then we won't be interested in this game soon;and they won't sell the speed ups or crowns in store.also the less we play the fewer chance we are willing to buy any other items.so I feel pessimistic on whether they will make any change.