The survival world isn't about shops and towny and the stuff we have in the main world. It's as close to pure minecraft that we got. It's there to offer another option for people who may not like the plugins on the main world side.
The regular world has had many restructuring changes already. Mine cart Mania may have helped some ambitious players make massive money farms, but before MC Mania was in place builders were still able to gain millions in iconomy by doing work, which is actually part of the draw of the game to many players.
Towny is a fine way for players to group together and protect their houses. We reserve world guard for certain situations. So adding a member to your town shouldn't just be a rush to grab the next new guy on, get to know people, then give them permission to build and destroy in your claimed area. Your builds will be safer and you can make even better friends.
But creative mode just isn't an option we offer to builders on this server. Half the people who got it would make atrocities upon the land and sky, and grief to no tomorrow with the ability to brake blocks with no effort. The other half may build wonderful things, but at what cost? None. This would break the server as it has been most recently structured. As an example of what can be done without creative, I built the Spawn Embassy with no creative mode, no flying, no extra source of income, I found a mine, I mined it, I sold the blocks, and I bought my supplies from the server mall. It wasn't a huge pain to do it, it was really fun and fulfilling when it was done.