I have played on several servers that used a dynamic economy.
The upside - It can be entertaining to have to go explore again to locate that new money maker run.
The downside - how players react to it and some will use the following methods to locate the new trade route
Traders have to spend a lot of time looking for the new trade route via news or exploration.
- Takes a large amount of time (hours usually) and risk being pirated constantly.
Create a "market" ship, this contains 1 of all the major commodities so a player can glance at the listing for the price updates - Can run a high risk of exceeding the maximum number of items allowable on a ship and requires a ship that has visited every base.
Use an external program to locate the best trade routes. - To some this is viewed as an exploit or outright cheating.
Spend a lot of time chatting in system to compare routes - Time consuming and also notifies pirate that there are traders in the area.
Main downside - Requires that every player updates their game files at every login. Places additional strain on server resources and the database. The server crashes quite a bit currently, do you really want to push it further?