I see no point in playing on the test server as it has the same restrictions as the regular server. If I were to play on test I would want access to all the features that a gold member would have. Otherwise, meh.
You're looking for the beta server. +Unlimited SC, +gold features. -/claim is disabled. -Wipes happen. And the point of playing on the test server is an actual desire to help make the game better.
If you want to help, we can use people who aren't gold to see how thing affect them too. If you don't play gold on live then you are better able to report how things affect f2p.