To further activity within an alliance and maintain membership especially after completing "season 1 " – there is very little incentive to remain in the game … right now there is no progress after season 1 is completed. BY introducing intra-alliance trade and a lock-in to that alliance for 45 days, There would be no “trade and run” but would promote teamwork, cooperation and alliance strategizing. This would increase alliance participation and ultimately the buying of materials within the game itself.
I hope you give this idea more than a passing glance.
Thank You....