Ryahl and I have been MIA for most of the week due to a move irl. Personally, we like test a lot. We played on live before quitting the game and returning to check out LU24 (i think? the crafting one) to see what kinda changes were happening. We enjoyed test so much, we decided to come here and play full time. We left most (all?) of our guild behind in the move, and have settled down pretty well with a few new AS folks and now the folks from our raid alligence.
That said, we'd not be intrested in playing on a live server again. If test died, we'd likely go play one of the 3 games we are currently beta testing infrequently.
Also, had test 2.0 been up during the trade skill patch..we wouldn't be playing on test--or eq2--now. (is that good or bad? 
) We would have copied over, played on live for awhile..and then likely quit. We played on live and didn't like it.
However, is there a justicification for keeping test around as a 100 person server? dunno. But with the new changes, we'll likely see very little growth in the future, and as others here have said, that equals death for the test server.