There are so many aspects of an SVN to want to test for. New drops, new maps, etc etc. There is just no way to test everything afterall, new things are found out everyday =)
What I suggest is that you look for things it matters to you specifically. In Ultima's case, mvps possibly. Testing out new quest and such shouldnt take more than a day.
I suggest certain commands be available to players for high rates only, such as @warp, @heal, @alive, @mobsearch. And since we're making it a high rate, why not take it to the max and make it 10k?