Ive posted this as a suggestion before, but it makes more sense here.

Creating a team market that doesn't have any traces would add a completely new dimension to this server. Basically the goods would show up in your private market at the price your team member listed. When the goods are bought up, yout private goods are available. Obviously for tech this would be 0 after they are bought out.

But from a netting perspective this adds a lot of teamwork. It doesn't fix any warring problems. But it will make it a unique server.

Thinking through this each team would want a demo to buy as much of the public goods as possible to resell to the team. There could be clear roles for each member