I have been thinking for a long time since the release of the antiquities system how cool it would be to have customizable siege or keep styles. With how tanky everyone is this could be a great solution to making siege genuinely scary again.

Think of it like this:
- You can design your own keep colors/banners or brick type within your guild so that when you claim a keep or outpost it reflects this.
- Add to this being able to buy or design your own siege styles. All we have is the head of our alliance on the front. With all the crazy mounts out there but we have no different siege colors or styles at all?
- All your siege has parts that can be upgraded/interchanged to provide bonuses. You could find leads for upgraded parts like the current system that you need to dig up for permanent use. A few ideas could be a spike for ballista's to allow placement on uneven surfaces, different bolts allowing multiple shots per trigger pull, different reload mechanisms allowing faster fire rates, cold fire oil, oil that snares etc...
- Completely new siege like walls that physically prevent player movement or funneling into a highly defended area.

There are endless possibilities with this that would bring tons of casual and pve players into pvp.