I think having siege fights in zones would be a great content added in now that PS3 has been dropped

Siege

3-5 Waves of mobs followed by a Mega Boss that could be a Primal, Raid Boss, All new Bosses, the waves come from any of the 4 directions North South East and West, Each wave is Harder then the one before it. Players will need to protect the Base from these waves to win the Siege

Rewards

Tomes
Siege Marks
Exp
Siege shop only available if Siege is won

Siege Mark can be traded into for the following Items (Updated every 3 Months)

Crafting materials
Mounts
Minions
material for both crafting and DoW/DoM

If Siege is lost

Teleport for zone is disabled
Siege shop is removed

For Crafting jobs

Able to craft Cannons to help with the Siege so crafters will have a way to earn exp during the Siege not just for the DoW/DoM

Siege time could be 3 times a day 10am 3pm 8pm that way everyone has a chance to be in the Siege. Siege may take place in more then 1 zone at a time