For example, if I had 50 spare turns that I didn't need at the moment, I could select an option and donate a sum of it to my nation (perhaps a turn-fee of 10% could be introduced so that if I give 50 turns, the nation receives 45?). The turns could be used to give members the ability to build ships that they need to protect trade fleets, or to buy voodoo to attack the opposing side! Another possible use is to donate one country's turns to another nation (this could wait after diplomacy between the two have been established to prevent usurpation of a throne just for access to the turns.)
Since I did not go into great detail, I hope that the more experienced minds of Avonmora chip some advice and help shape this to be something very beneficial to the game

(I was going to name this Turns In Time of Strife, but didn't because the abbreviation would have possibly gotten me banned)